Equipment
Korea’s FreeFlex shaft proves that lightning strikes twice

The biggest obstacle to success is said to be a closed mind. If past innovators had not been bold in trying new things and testing conventions, we may still be playing with featheries and hickory shafts. Thanks to their pioneering ways, the game was able to evolve into the wonder that it is today and I am grateful for all the advantages I have enjoyed.
According to a recent YouTube video uploaded on TXG, one such innovative product they have tested in recent years is the Autoflex shaft. Despite the shocking pink color and a high price tag, the whippy shaft from a relatively unknown Korean manufacturer has won over a significant number of golfers with its promise of distance and accuracy while going easy on the body. The shaft opened up a whole new shaft category by itself, and after almost three years it is still pretty much the only fighter in the ring.
So why haven’t more companies been entering this niche pioneered by Dumina? The market is clearly there. Surely, there must be other manufacturers capable of putting out their own versions? Is KHT really something that no one else can figure out? Whatever the reason, there hasn’t been any serious contenders making a run at the champ. Until now, that is.

The premium ultralight shaft category has a new entrant in FreeFlex shaft… from South Korea, where else?
Ottophlex?
In the absence of established shaft makers, I did see a lot of individuals on various online forums trying to find their own version of a cheaper Autoflex. Affectionately dubbed as OttoPhlex, I have come across several impassioned posts where golfers have detailed their endeavors to find an effective replacement. To their delight, many have said their bargain shafts also produced noticeable distance gains while retaining accuracy.
That’s just awesome. I think it’s great that Autoflex generated such an interest in golfers to turn over every stone in our search for all the advantages we can get. One caveat, however, seems that an OttoFlex shaft that worked wonders for one guy sprayed the ball all over the place for another. Of the various OttoPhlex shafts I have seen online, I have yet to see a true contender that worked for a wider group of golfers like Autoflex.
In a way, Autoflex reminds me of Floyd Mayweather, Jr., the unbeaten boxing champ. Love him or hate him, one can’t deny that his boxing skills are effective. Similarly, whatever Korea Hidden Technology may be, it simply works and deserves its just dues.

One unique attribute to FF’s water color shaft is that no two shafts are the same.
A Korean Lightning Strikes Again
Now a promising new challenger has entered the ring to contend for the title of the ultra-light premium shaft. The contender, also hailing from South Korea, goes by the name of FreeFLexx (OttoPhlex was taken, obviously) and comes with an extraordinary spec sheet. And to save you readers some time, the shaft is nothing short of amazing.
Dr Seung-jin Choi, founder and CEO of SJ (Special Joy) Golf Engineering Lab, is a lifelong golfer/entrepreneur with an impressive resume and some pretty unconventional ways of thinking. With a PhD in materials engineering, he has over 30 patents in various fields, including materials engineering, architecture, and industrial design and 12 patents (and growing) in golf clubs and shaft design. His appetite for knowledge is only rivaled by his keen ability to adapt and apply them effectively to his research and inventions.
Ever since AF came on the scene, I’ve been waiting for other OEMs to offer similar tech and performance to the AF at a lower price tag so that it can be more accessible to a wider audience. Err… let me return to that idea later.
When I first met Dr Choi, I thought I’d stepped into a golfer’s version of Dr Frankenstein’s laboratory. I’d love to mention some of the jaw-dropping golf innovations he is working on, but an embargo dictates otherwise. But I guarantee you will hear more of his mind-blowing creations soon. Just remember I said it here first.

Care for some ultra-light carbon putter shafts that can make any putter stand upright on its own? Then RolyPoly is for you. Just one of many zany things in the works at SJ Golf Lab.
Opening the box, I half-expected to see the color pink and breathed a sigh of relief at the sleek matte black carbon weave design. But aesthetics aside, the shaft had to first check all the requisite boxes for me to even consider it a true contender to the AF. After all, this weight class is not for just any AF wannabes or conventional senior-flex shafts.
To be clear, I am a big fan and user of AutoFlex shafts. But seeing the FreeFlex shaft check all the same WOW factor boxes gave me goosebumps. “Has AF finally found a match in the FF?“
From Theory To Reality
According to Dr. Choi, FF technology is a totally different animal from KHT in concept and manufacturing method and is solidly rooted in measurable and verifiable science. It all began over two years ago with a single question, “Which part of the swing most determines the performance of a golf shot?”
After consulting hundreds of top amateurs and pros along with top professors in sports sciences, he determined that an effective downswing transition was key to long and accurate shots. This led to his next question, “Can a shaft be made to provide golfers with a repeatable and effective downswing transition for better impact and ball control?” With this specific goal in mind, Dr Choi embarked on his research, drawing on his 30+ years of golf experience and scientific background. To many people’s surprise, he was able to prove some pretty eye-opening facts along the way.
I’ve often said that some of golf’s commonly-held conventions should be re-examined lest we may have overlooked anything. With new materials and applications for its use being discovered each year, I definitely think new ‘breakthrough’ discoveries are possible. AF and FF are just the tip of the iceberg.
Before I begin, let me also state that I am an absolute novice when it comes to shaft engineering and manufacturing. I still don’t know what KHT is about, and I am just as ignorant about FreeFlex technology (FFT) as it, too, is veiled in secret and awaiting a patent. So bear with me as I try to explain the idea and innovation of FFT, as translated from speaking with the inventor.

The waggle test that put AF on the map can be seen in the FF as well
FreeFlex Tech – The New Secret Sauce?
Prototypes of the FreeFlex shafts were first launched in April 2022 exclusively in Korea and were tested extensively among the pros and the club fitting community. Soon, word of mouth began to spread among the pros, who were taken aback by the performance benefits of FF. More interestingly, the FF also came under scrutiny from the sports academia as well as the club fitters, most of whom were absolutely skeptical that the shaft can do what it claimed. And Dr Choi was more than happy to show the science and the research to back up his work with FreeFlex.
Having listened to the inventor, however, I can’t really fault them for being doubtful. After all, Dr Choi’s questions and unconventional thinking challenged many of the established notions that I also thought were rock solid. For example, can a single shaft exhibit two different flexes? That is, can one side can be stiff to promote accuracy while the other side is flexible to add an extra kick for more distance?
When everyone said that’s impossible, Dr Choi said “I’ll show you. Let me boot up my computer.”
“We have developed a unique shaft to which the pronate and supinate principles have been applied by considering not only the swing toque acting upon the shaft; but also in considering the warping moment and bending torsional moment to optimize Impact and MOI.” – Dr. Seung-jin Choi, inventor of FreeFlex Technology
Before all this, I thought I knew the relationship between a shaft’s flex and torque. Namely, a low torque corresponds to a stiff flex and vice-versa, and more flex may lend itself to more distance, but at the risk of less accuracy. Despite what I thought I knew, Dr. Choi informed me that this was not always the case. In fact, he found that torque and flex (CPM) can be independent of each other and that a 35g shaft with 170cpm can have a torque as low as 2.0. That’s even lower (and firmer feeling) than an extra stiff tour shaft!
In explaining how he can manipulate torque and flex in any combination desired, the actual math and science went straight over my head but I was offered a simpler explanation. Imagine that one side of the shaft has a limiter on it, while the other side has an accelerator. The limiter prevents the shaft from twisting and bending past a certain threshold to increase the chances of the shaft returning back to its original position for accuracy. In turn, the accelerator would activate on the downswing to increase club speed for added distance. As improbable as it sounds, this is the basis for FreeFlex.
But hey, we all know that anyone can talk the talk and all is for naught if it can’t perform. So can FF really put its money where its flex is?
Battle Of The Flexes
Over the past three years, many golfers have given testimony to the effectiveness of AF and I have also enjoyed my own AF to mostly good ends. While I’m not the foremost expert by any means, below is my own assessment of the similarities and differences that I have observed between AF and FF.
Overall, I found that FF not only was comparable to AF in both distance and accuracy, but it also offered three key differences which may be welcomed by golfers hesitating to pull the trigger on the pink bomber.
Observations
The first difference was the swing weight recommendation for both shafts. The AF 405 and FF 405 had similar weights (45g raw) and flex (190cpm), but the swing weight was totally different at C8 and D1.5, respectively.
From the beginning, AF shafts have frustrated many a golfer trying to get the swing weight down, since the average driver heads were too heavy. As a result, it required switching to lighter head weights or removing them altogether. In addition, certain brand club heads were not suitable for AF, and sometimes the overall driver build length had to become shorter as well. Needless to say, this irked a lot of players and golf fitters who had never encountered such hurdles in their drivers. It is a testament to AF’s performance that so many golfers have put up with it at all.
In comparison, the FF shafts seem more accommodating in this department. The recommended SW for the 38-series is at D2~D5, which should make club fitting all that much easier for a wider variety of driver heads.

FF shafts feature the weight, CPM, and torque. The bow and arrow symbolizes the idea of FreeFlex Tech, as the shaft reacts to even a small amount of energyacted upon it, much like a bow.
The second key differentiator between the two is swing mechanics. By nature, I am more of a swinger than a hitter, and AF suits my swing super well. With a slow and measured backswing and a smooth downswing transition, I have gained nearly 20 yards over my past conventional shaft. As such, many golfers have testified to benefit from slowing down and smoothing their transitions to unlock AF’s performance. However, for golfers with an aggressive or quick transition, the AF proved difficult to tame, which has led many to believe that AF is only suitable for smooth swingers.
FreeFlex, on the other hand, claims that its shafts can be swung effectively regardless of the type of downswing transitions. From my own limited testing with three friends in this regard, I can say that FF did fare better than AF for hitters with a more aggressive swing. More specifically, FF shafts were noticeably more resistant to the left side and kept hard hooks to manageable draws to keep the ball in play more often. Dr. Choi also added that the shaft is less prone to break, as it uses higher grade carbon content over its counterpart.The third big difference noted by most testers is that the FF shaft feels more stable throughout the swing. Keep in mind that feel is subjective, and “stable” here is only referring to the feel and not the actual shot result. From my experience, the AF shaft is soft and malleable on both the backswing and the downswing, which took me a few weeks to get used to and trust that the head will return to square.
In contrast, FF has the same low CPM but the shaft is noticeably firmer especially on the downswing, giving a feeling of stability. I was better able to feel where the club head was at all points of the swing, and that gave me a slight edge in confidence on the money shots.
The three aspects were the biggest differences that were reported by FF users, and I can also agree on the observations. On a Trackman, my current AF was on average longer by 2m with a 4% smaller dispersion, while the longest single drive by each shaft favored the FF at 239m to 231m.
What gave me pause was that while AF has been my trusted gamer for the past 2+ years, I only hit the FF a couple of times since receiving it. And despite the short duration and novelty, FF performed just as well for me as AF, with the alluring promise of further fine-tuning and additional improvements to be had. Welcome to the weight division, FF.

Measurements on the butt end makes it convenient to trim the shaft to desired length.
Price And Availability
Unfortunately, FreeFlex tech shafts are currently available in Korea for the time being, though an English website is in the works at www.freeflexshaft.com for February. According to the company, offline retailers and custom fitters will soon be available to offer FreeFlex in three color options; matte carbon black, glossy carbon blue, and a one-of-a-kind custom watercolor design.
All these ultralight and performance-enhancing factors do not lend themselves to low pricing either. The retail price of the FF driver shaft is set at $650, and while it is much higher than most premium shaft offerings on the market, it is nearly 20-percent less in comparison to the Autoflex at $790.

Aside from multi watercolor, FF comes in matte and glossy carbon weave tinged in blue color that looks amazing outdoors
For a limited time starting in February, SJ Golf is also taking applications from professional golfers and reviewers to test the FreeFlex demo shafts. Applications and inquiries can be sent to [email protected] and the company will notify the results individually.
And there you have it. The FreeFlex shafts have arrived to join the party and I can’t wait to see who else joins this exclusive club. It would be great to see who rules this ultra-lightweight division, but no matter who is crowned champion, it will be us golfers who will be the ultimate winners.
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Equipment
7 takeaways from an AWESOME equipment talk with Padraig Harrington

Fans of golf equipment have long known that Padraig Harrington is one of us. Throughout his career, Harrington has been willing to test new products, make changes from week to week, and play with a bag of mixed equipment brands.
What equipment fans may not know, however, is just how brilliant of an equipment mind Harrington truly has.
Ahead of the 2023 Valero Texas Open, I caught up with Harrington to pick his brain about what clubs are currently in his bag, and why. The conversation turned into Harrington discussing topics such as the broader equipment landscape, brand deals in 2023, his driver testing process, why he still uses a TaylorMade ZTP wedge from 2008, square grooves vs. V-grooves, and using a knockoff set of Ping Eye 1 irons as a junior.
Padraig Harrington’s 2023 WITB
Below are my 7 major takeaways from the extensive gear talk with Harrington.
1) Padraig’s stance on equipment contracts, and why he prefers Wilson
Harrington is a longtime Wilson staffer, and although he supports the brand and uses their equipment, he doesn’t use a full bag of Wilson clubs. He finds Wilson’s understanding of a player’s need for flexibility to be beneficial to the player, and it’s attracting more and more professional players to the company (such as Kevin Kisner and Trey Mullinax).
“Wilson wants me to play whatever I’m comfortable with. It’s very important. They’re not a manufacturer that says, ‘We want you to play 14 clubs.’ There’s always a club you don’t like. That’s just the way it is. So Wilson is like, ‘We want you playing well and playing the best clubs for you.’
“I am very comfortable with their irons. I’m very comfortable with their wedges, as you can see. They have an old hybrid 4 iron that I love. They have a new hybrid 4-iron that is too powerful. I put it in the bag last week and I had to take it out. The thing is, I use a 4-iron and a 5-wood. My 4-iron has to go somewhat relative to my 5-iron, and then I have to bridge that gap between 4-iron and 5-wood, so it has to do both. The new 4-iron was going 230 yards. My 4-iron goes about 215-235, maybe 240 on a warm day. And my 5-wood is like a warm-day 265 in the air, but I have no problem hitting it 235, so I can cross it over. But this 4-iron, the new version, it just went. I couldn’t hit the 215 shot with it; it’s just too powerful. That’s why I have the old 4-iron in the bag, but it does the job to bridge the gap…
“As players get more money, they’re less dependent on manufacturers. They need the service of a manufacturer – because, like I need to be on that truck and get things checked. But you’re seeing more players see Wilson as an attractive option because you don’t have to use 14 clubs. If you’re not happy this week with the putter; you know, Wilson has the putters, they have everything, but if you want to chase something else for a moment…remember, there’s two things you’re chasing. If you’re a free agent, it’s not good to be changing a lot. That is a distraction. But it’s nice to have the option that if somebody…like I feel Titleist has come out with a great driver. And I’m able to work my way straight into Titleist and say, ‘Hey, gimmie a go with that. Oh, this is a great driver, I’m going to use this.’ Wilson is aware of that. They want their players to be happy and playing well. Like it’s still 10 clubs, but it’s just not 14 and the ball.
“The irons are great, there’s no doubt about that. They’ve won the most majors. They make a gambit of irons. If you want to use a blade, they have the blade. If you want to use my iron, which is just a good tour composite, it has a bit of a cavity-back, you can do that. If you want to use the D irons that have rockets going off there, you can have them. Like the 4 iron, the one they gave me, it was a rocket! And guys are happy to carry driving irons like that, but mine has to match in with the 5-iron. It was just too high and too fast.
“So yeah, I think you’re going to see manufacturers go more of that way. Our players want to be independent, but the problem is that full independence is not great. You don’t want a situation where you’re turning up – as you see kids who make it into their first tournament, and the manufacturers start giving them stuff, and they’re changing. You don’t want to be the guy changing too much.”
2) The dangers of a 64-degree wedge
Although Harrington himself uses a Wilson Staff High Toe 64-degree wedge, he seldom practices with it. Here’s why he warns against it:
“The big key with a 64 wedge is DO NOT use it. No, seriously, do not use it. It’s a terrible wedge for your technique. That club is in the bag and it gets used on the golf course, and it gets used when it’s needed, but you don’t practice with it, because it’s awful. So much loft will get you leading too much, and you’re going to deloft it. Hit one or two shots with it, then put it away. You’re better off practicing with a pitching wedge and adding loft to be a good chipper instead of practicing with a lob wedge and taking loft off. A 64-degree wedge is accentuating that problem. It’s a dangerous club. It does a great job at times, but it certainly can do harm.
“It’s not bad having it in the bag for a certain shot, but it’s a terrible club to practice with. I literally hit one or two full shots with it, a couple chips with it, and that’s it. I know if I spend too long with it, I’ll start de-lofting.”
3) The interchangeable faces on TaylorMade’s ZTP wedges from 2008 were Padraig’s idea?!
I couldn’t believe it myself, but Harrington says that the idea for TaylorMade to offer interchangeable face technology on its ZTP wedges in 2008 was originally his idea…
“The TaylorMade is obviously attracting a lot of attention, but that was my idea! Myself and a consultant for Wilson, I got him to build changeable faces and he sold that to TaylorMade…that’s fully my idea. He sold that then to TaylorMade, and TaylorMade produced them, which I was happy about. But TaylorMade couldn’t sell them. You can’t get people to clean the grooves, so they weren’t going to buy a new face. Why have 400 faces at home? So I went out and bought these faces to make sure I had them for life. And I was home chipping a while ago, and I have a nice 58. I like the grind on that wedge, and the fact I can just replace the face and have a fresh face every three weeks, it’s just easy, so that’s why that’s in there.”
4) Driver testing isn’t all about speed
“The driver companies know I’m a free agent when it comes to drivers, so every time a new driver comes out, they’ll come to me and say, ‘Hey, would you have a look at this?’
“I will test everything, yeah, but it has to beat what I have in the bag. And Wilson’s new driver is the same. They brought out a new driver and it’s great, but I love the driver I’m using. So I say, ‘Look, guys, not only do you have to be as good as the incumbent, you have to be better, because I already know this and I’m familiar with it.’
“Wilson has built a very, very good driver. There’s know doubt about it. But I love the driver I’m using. And none of these manufacturers can build me a driver that’s better.
“Ball speed gets a driver into the conversation, and then you bring it to the golf course. So the driver has to be going as good as my current driver, and then I bring it to the course and see if I can hit the thing straight. I have gone down the road [of prioritizing speed]…I used a driver in 2014, and it never worked weekends. But it was fast. I used it for about six weeks I’d say – six tournaments – and I missed six straight cuts. It never worked the weekend. It was really fast on the range, but it just wasn’t good on the course.”
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5) Playing with knockoff irons as a junior
“I played as a junior for Ireland, under 18’s, and I owned half a set of golf clubs, and they were imitation Ping Eye 1’s. I borrowed the other half set off my brother. We had a half set each. I had the evens, he had the odds. In that tournament, there was a guy playing with Ping Berylliums with graphite shafts. They cost 1,900 pounds. Mine cost 100 pounds, and they were knockoffs. So I played, for my country, with a set of knockoffs. Before I used those knockoff clubs, I used a mixed bag of clubs. As in, I picked up whatever club they had. The 6-iron might go farther than the 5-iron. The 5-iron might go with a fade and the 7-iron might go with a hook, but I knew what my clubs did. Each club had a purpose.”
6) Using square grooves and V-grooves simultaneously
Square grooves – or “box grooves” – were outlawed by the USGA in 2010 because they were said to help golfers spin the ball too much. V grooves are said to provide less of an advantage because they restrict the sharp edges of the grooves, thus reducing the amount of friction imparted on the golf ball. Prior to the rule change, however, Harrington actually used both V grooves and box grooves, and he’d adjust his setup depending on the golf course.
“What’s interesting is, when the box grooves were around – very few people know this – I carried two sets of clubs at all times. I carried a V groove and a box groove.
“Yeah, see, the box grooves were unbelievable out of the rough, spin wise, but if the rough got to a certain level, the ball would come out so low and with spin that it wouldn’t go very far. Your 7-iron coming out of this rough would only go like 140 yards and it wouldn’t get over any trees because it would come out so low. What I was doing was, if I got to a golf course with this sort of a rough, I’d put in a box groove 7-iron and a V-groove 8-iron. If I got in the rough and I had 170 yards, I’d hit an 8 iron and get a flyer, because the 7 iron wouldn’t get there depending on the lie. And I couldn’t get it over things. So if there were trees, you needed the V groove to get over the trees. A box groove wouldn’t get up in the air.
“No one else was doing it. I played with the box groove for a couple years before I realized that in certain rough, you need the V groove to get there. Hale Irwin played a U.S. Open seemingly with no grooves. Off the fairway it’s meant to make no difference. I would disagree, but that’s what the officials would say. But out of the rough you needed the flyers to get to the green. The V grooves were doing that for me. You get your flyer to get of the rough to get the ball there, but then if it was the first cut of rough, or light rough, or Bermuda rough, or chip shots, it would come out so low and spinny that you’d have no problem.
“I can’t believe that people didn’t realize that I was doing this two-groove thing all the time. I swear to you, you could stand here, you would not launch a 7-iron over that fence there if it was box grooves out of light rough, and V groove would launch over it. The launch characteristics were massively different.”
7) Blame the person, not the putter
Interestingly, Harrington, for all his tinkering, has only used a handful of putters. It turns out, there’s a good reason for that — although he’d like his current model to be a few millimeters taller.
“I used a 2-ball when it came out. Then I used a 2-ball blade, which I won my majors with. I always had a hook in my putts, so not long after I won my majors, I went to face-balanced putter because it helps reduce the left-to-right spin. I started putting really badly in 2013 and 2014 – I had some issues. And then come 2016-2017, I just said, look, I putted well with this putter. If I use this putter, I can’t go back and say it’s the putter’s problem. It’s gotta be me. So I went back to the face-balanced 2-ball blade because I’ve had good times with it. I may have only used 5 or 6 putters in my career.
“I’m really happy that I’ve got a putter that I know I’ve putted well with, and I don’t blame the putter. I can’t say that anymore. I don’t blame my tools, I blame myself if I miss a putt. So it comes down to…I know the putter works, then it’s me. Me, me, me.
“You know, I’ve toyed with using other shafts in the putter, and I will look at other putters, but things are askew to me when I look down. So I can’t have a putter with a line on it. It doesn’t look square to the face. I’ve never putted with a putter that has a line on it for that reason. I line up by feel. I know that putter works, I know it suits me, so that’s why I go with that…
“I prefer a deeper putter (a taller face). The one issue I have is I hit the ball too high on the face, but they won’t remodel the whole system to make me a deeper putter. I’ve tried some optical illusions to try and get it where I hit the ball more in the center, but I hit it high. It seems to be going in the hole so I’m not going to worry about it too much. But in an ideal world, if someone came along and said they could make the putter 3-4 millimeters higher, I’d be happy with that.”
See more photos of Padraig Harrington’s 2023 WITB here
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Equipment
TaylorMade survey on ball rollback finds everyday golfers massively against introduction of Model Local Rule

In response to the USGA and R&A’s recent announcement that they plan on rolling back the golf ball for the professional game, TaylorMade Golf issued a survey asking everyday golfers to voice their opinion regarding the topic of golf ball bifurcation. Today, they are sharing the results.
Almost 45,000 golfers across more than 100 countries spanning a variety of ages, abilities and participation levels took the time to complete the survey and have their voice heard, with some of the major findings shown below:
- To the best of your knowledge, do you agree with the proposed golf ball rule?
- 81% No
- 19% Yes
- Do you think average hitting distances in professional golf need to be reduced?
- 77% No
- 23% Yes
- Are you for or against bifurcation in the game of golf (i.e., different rule(s) for professional golfers versus amateurs)?
- 81% Against
- 19% For
- How important is it for you to play with the same equipment professional golfers use?
- 48% Extremely important
- 35% Moderately important
- 17% Not important
- If the proposed golf ball rule were to go into effect, would it have an impact on your interest in professional golf?
- 45% Less interested
- 49% No impact
- 6% More Interested
The results also show that 57 percent of golfers aged 18-34 years old would be less interested in the pro game should the rule come into effect, while five percent said they would be more interested.
“The goal of our survey was to give golfers the opportunity to voice their opinion on this proposed ruling as we absorb the MLR and its potential effects on the everyday golfer. We are grateful that nearly 45,000 golfers across the world felt the need for their voice to be heard. The overwhelming amount of responses show the passion, knowledge and care for the game our audience possesses. Each response and data point is being reviewed as we will utilize this feedback in our preparation to provide a response to the USGA and R&A.” – David Abeles, TaylorMade Golf President & CEO
You can check out the survey results in full here.
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Equipment
Spotted: Odyssey Tri-Hot 5K Three “anti-right” prototype putter

Odyssey Tri-Hot 5K putters have really taken off on tour, and we have seen a handful of models in tour player’s bags. The latest version we spotted out on tour is a very unique design.
Odyssey makes this putter head with a standard flow neck that offers plenty of toe hang for golfers who prefer or need that weighting. This prototype has a long slant neck installed more near the center of the putter head that lets the toe sit slightly up in the air when held horizontally. This is pretty different since most putters sit with the toe hanging down towards the ground or are face balanced (face sits parallel to the ground). A full shaft offset looks to be achieved with the slant neck and the look at address is definitely different.
We spoke to Callaway PGA Tour manager Joe Toulon about the putter and he had the following to say
“On course [we had a player who] had a little push bias that didn’t necessarily show up in practice but it is something that he felt on course. So we wanted to build something that was a little easier to release and maybe not necessarily open the toe as much in the back stroke and not have to work as hard to release it in the through stroke. That was kind of designed to give a little offset and when you rested it on your finger it would rest toe up a little bit. We thought for that player it would help him square the putter face at impact rather than leave it open a little bit.
“It was more of a concept we had and will continue to work on it. When we had it on the truck and we were hitting some putts with it we noticed that you had to work really hard to push this putter. We wanted to make an anti-right putter. Just a fun little concept that we have an idea and work with our tour department to test things out.
“It isn’t something that ended up in a player’s bag but we learned some things in that process and will keep in mind for future builds and projects.”
The finish also looks to be a little different than the standard Tri-Hot 5K putter’s black and silver motif. The face and neck are finished in silver and the rear done in more of a blueish-gray tone. The White Hot insert looks to be standard and the sole still contains two interchangeable weights.
The shaft looks to be painted in the same metallic red as their standard Stroke Lab shaft, but we don’t see a steel tip section. Not sure if this putter has a full graphite shaft or painted steel.

Toe sitting slightly up
Check out more photos of the Odyssey Tri-Hot 5K Three Putter.
More “Spotted” pieces
- Spotted: S.H. Kim’s Custom Scotty Cameron Circle T Newport putter
- Spotted: Brent Grant’s Scotty Cameron Circle T T5W putter
- Spotted: Beau Hossler’s custom Scotty Cameron Circle T TG6 putter
- Spotted: Tom Kim’s 2 new Scotty Cameron Circle T putters
- Spotted: Bettinardi BB41 Flow 25th anniversary putter
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Whats in the Bag2 weeks ago
Brett White WITB 2023 (February)
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Skip
Mar 10, 2023 at 9:44 am
Why is this article written like Free Flex and Autoflex are different companies?
Tai
Feb 23, 2023 at 10:22 pm
Some body need to test out AF, FF, and the Brava. They all claim they are the new AF…
DaveD
Feb 1, 2023 at 11:02 am
After watching TXG test the new Mitsubishi Vanquish lightweight shaft, it appears there is another option to Autoflex and FreeFlex.
jccrmr
Feb 1, 2023 at 7:45 am
To each their own, I found the BGT brava exceeded the performance of KHT
F
Feb 1, 2023 at 2:17 am
Can we quit with these biased ads
SKip
Mar 10, 2023 at 2:17 pm
100% paid Ad. Free Flex is literally the same people behind AutoFlex.
Azstu324
Jan 31, 2023 at 5:24 pm
When you reference the “OttoPhlex” and stated that it either works great for some but others are spraying it all over, isn’t that also the general consensus of the original Autoflex and I’d presume the Freeflex as well.
The other forum where there is a very healthy discussion about the concept behind these shaft profiles, many different shafts have been presented BUT there is a shaft that could be considered a standard representation of an Autoflex replica. That’s been the Garafalloy Pro Launch Blue 45g. Many of us have transitioned from test shaft to game shaft with amazingly successful and repeatable results.
derek gzaskow
Feb 2, 2023 at 1:14 am
Yep working for me the GPLB at 45 grams and for 55 shipped I can get it for ALL my drivers 8)
Azstu324
Feb 4, 2023 at 6:42 pm
And for less than the price of 1 Korean magic wand.
H
Jan 31, 2023 at 5:08 pm
Just seek out the Skitter shaft. The original. Way better
C
Jan 31, 2023 at 11:21 am
Can Korea quit making junk cars though
TonyK
Feb 1, 2023 at 1:00 am
Are you from 1990?
B
Feb 1, 2023 at 8:19 pm
Did you not see the car news ?
E
Feb 2, 2023 at 2:25 am
Read the news