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Pinhawk Vs Sterling Irons® Single Length Irons

Thursday, February 7th, 2019


I have a question you may or may not want to answer, as it deals with one of your competitors.

I was looking into the Pinhawks as a single length club option. Their price point is much cheaper, but what would I be getting for that price? Is the technology up to par?

As far as I can tell all the clubheads weight the same at approximately 272g, and that’s it. Some guy in Edmonton has the heads and I am actually going to go check them out this week.

I would love your honest opinion on them.

I will also mention that on their website they do actually mention your clubs as an alternative and recommend if you do not buy from them then purchase from Sterling Irons® as you guys are on the leading edge of one length.

Thank you again for the interaction.


Tom Wishon’s Answer:


Sure thing, I don’t mind commenting on the differences between the Pinhawks and the Sterling Irons®.

The reason the price is so different first of all is because the Pinhawks are one-piece investment cast stainless steel iron heads with a common polish and tumble finish. That’s the lowest cost type of iron head in the golf industry today.

The Sterling Irons® #4, 5, 6, 7 irons are a 2-piece investment cast carbon steel head with a high strength steel high COR face plate welded to the body, after which the heads are nickel chromium plated. The Sterling Irons® #8 to LW heads are a one-piece investment cast carbon steel head with NiCr plating to finish the heads. Those head construction types are the most expensive in the golf industry for an iron.

Performance-wise I can list the differences.

1) The Pinhawks used to be made to a single length of 37.5″ which is a 6-iron length. I do not know if they changed that recently or in the past couple of years since I designed and we intro’d the Sterling Irons®. A 6-iron length makes it a little more difficult to adapt to the 9, PW, SW in the set because the 6-iron length makes them about 2″ longer than conventional wedge lengths. It would be easier to hit the high number irons and wedges farther than you need because of this much longer length.

2) We did the Sterling Irons® based on an 8-iron length because most people hit an 8-iron more consistently than they do a 6 iron, and because an 8-iron length makes the wedges only an inch longer than what they are in a conventional set. So, that allows the wedges to be easier to adapt to and less likely to hit the shot farther than you wish to.

3) The only possible downside of an 8-iron length is that it means the very low loft irons are harder to hit high to fly and carry unless you have a higher clubhead speed. I did offset some of this by designing the Sterling #4, 5, 6, 7 irons with a high COR face to add more ball speed to help get the shot height and carry distance up. But if you do not have a clubhead speed with your current 7 iron of 85mph or higher, we would not recommend you try to use the #4 iron in the set. And if your 7-iron clubhead speed is under 75mph, do not include a 5 iron in your set.

With the Pinhawk #4 iron at a 6-iron length, you probably could hit that iron ok if your 7-iron speed is 80mph or higher. And with the Pinhawk 5-iron you probably would be able to hit it high enough to be happy with it at a 6-iron length if your current 7-iron speed is over 70mph.

But again, 6-iron length is more difficult to be consistent with than an 8-iron length, and 6-iron length makes the wedges harder to get used to for accuracy control and distance control.

4) Also, the Pinhawk heads are not made with a weight bore inside the head, so it is more difficult to achieve a wider range of swingweight for whatever shaft weight and grip size and length you might need.

All the Sterling Irons® heads have a weight bore to allow weight to be added during assembly so that it is possible to achieve a wider range of swingweights for different custom shaft weight and grip weight and length requirements.

5) In addition, bending the Sterling irons for custom loft and lie fitting needs is easier because the heads are carbon steel. Pinhawks are harder to bend for custom loft and lie because they are cast stainless steel.

That pretty much covers the differences in the two models, so I hope this helps.


10% Off With Bryson’s European Tour Win

Monday, January 28th, 2019

Bryson DeChambeau won the Omega Dubai Desert Classic in Dubai, United Arab Emirates on Sunday with a tournament record score of 24-under par.

This is his 6th professional win of his career using single length irons.

In the Official World Golf Rankings he is currently ranked 6th in the world.

Single length irons are on fire!

In honor of his latest victory, we are happy to extend another offer to you for 10% off on the purchase of Sterling Irons® single length irons via between now and Friday, February 1st, 2019.

Simply use the code below during checkout to receive your discount!

Code: 10dubai

The Sterling Irons® Team

Black Friday Cyber Monday

Friday, November 23rd, 2018

On behalf of all of us at Sterling Irons® single length irons, we’d like to wish you a very happy Thanksgiving weekend.

As you know, this weekend is a big shopping time for many people.

As such, we would like to offer you 10% off on the purchase of Sterling Irons® single length irons via if you buy between now and Cyber Monday on November 26th, 2018.

Simply use the code below during checkout to receive your discount!

Code: CYBER10

The Sterling Irons® Team

Can your company offer that?

Tuesday, July 18th, 2017

Sterling Irons Single Length Irons vs. Cobra One Single Length Irons


Hi, I am Tom Wishon and I am a career club head designer.

I have been designing club heads since 1986, during which I’ve had the pleasure to create designs for over three hundred and fifty (350) different models of club heads. One of the more recent models I have had the opportunity to design were the Sterling Irons Single Length iron.

Jaacob Bowden and I debuted the Sterling Irons Single Length irons in spring of 2016.

Well, in the last year one of the major golf club manufacturing companies has also come out with their own model of single length irons…and we got a lot of questions, like:

  • What are the differences between Sterling Irons Single Length Irons and Cobra One Length Single Length Irons?
  • Is one better than the other?

This has been one of my things I have done all my life is written a lot of articles, a lot of books, explaining the technology…and I am very pleased with the fact that I sought to have the ability to explain golf technology in very understandable terms.

So what I want do today is to be able to talk a little bit of the difference between Sterling Irons Single Length and the Cobra One…their version of single length irons.

Club Length

Okay…a few things, the whole concept single length, the Sterling Irons Single Length are based on a standard base club starting with a 36.5” 8-iron length. We chose to do that because in club fitting technology in a golf club design technology the shorter the length you see it is to hit the ball solid on center consistently. In the past, single length irons had all been built around a 6-iron length of 37.5”.

At 8-iron length, that means the Sterling Irons single length iron are fairly easy to hit.

You think about your own 8-iron, if you have a standard length iron…do you feel that you can hit your 8 iron little bit more consistently overall then you can hit you 6 Iron?

Okay…many people do.

Whereas the Cobra One single length set is based on a 37.25”length, which is really half way between the modern standard 6th and 7th iron length, so that makes the Cobra single length irons 3 quarters of an inch longer than a Sterling Irons single length iron. A number of people feel again the shorter the club the easier to hit more consistently…and that is after all one of the big factors with single length.

Single Length vs Conventional

Some also ask should I play a single length set of irons? Or a conventional length model set of irons?

One of the first considerations is…do you hit the iron somewhat inconsistent?

And do you go through periods where you miss a lot?

This is one of the areas where single length set of irons could help. Because with all irons being the same length that means you’re using exactly the same stance, the same posture, the same ball position, and same swing plane.

So you can have a chance to be a little bit more repetitive and potentially achieve a higher level of repeatability with single length.

But with Sterling Irons being 8-iron length 36.5” vs Cobra being 37.25”…this gives a nod to Sterling Irons to be a more consistent set of clubs to hit.

Distance Gapping, Metallurgy, and Face Design

Ok… we also going with that we need to be able to be happy with the distances, as we hit with each of these irons and we need to be able to hit each one of the irons at different specific distances with hopefully the same amount of distance gaps in between each iron in our set.

This has been one of the criticisms that traditionalists in the game try to point the finger at the single length set and say by making all the irons the same length that means you are not getting the higher club head speed for lower loft irons that you do in a conventional Incremental set of irons…that’s true!

And we knew that…I knew that when I was getting into the process of designing these Sterling irons. That’s why I designed the 5, the 6, and the 7-irons in Sterling Irons Single Length set with a genuine thin high strength steel face to create a true High COR performance, to give you more ball speed to make up for a potential loss of distance since your lower loft irons would be shorter in the single length set than they would be in a conventional incremental length set.

I have tremendous experience in my design career with High COR face design, and not just in drivers but fairway woods and hybrid designs.

In fact, I have the pleasure of being the first person to ever design a High COR fairway wood, the first person to design a High COR hybrid, and I was the first person to design a High COR iron in the year 2000.

Since that time, I’ve designed four other sets of normal irons that have High COR faces.

So, I know what I am doing when I am picking a high strength steel…knowing how to be able to create the highest COR from the ball speed relative to your club head speed, making your Sterling Irons set 36.5 inches of length.

This is how we bring back the potential loss of distance with the lower lofted irons by designing a High COR face in the 4, 5, 6, and 7 irons.

The Cobra One irons have attempted to do the same thing but they’ve chosen an alloy…a common stainless steel alloy of 17-4 stainless steel…and they tried thinning out the face to create to give you more ball speed.

It is a little bit more ball speed that you get from conventional normal 17-4 stainless iron head but it doesn’t achieve the higher ball speed, whereas our HS 300 high strength steel gives you for Sterling Irons numbers 4, 5, 6, and 7.

This is a point of metallurgy for the HS300 higher string steel we use in the Sterling Irons single length irons which has a strength of two hundred and seventy five thousand pounds for square inch. 17-4 stainless that is used in Cobra One irons has a strength of one hundred and thirty five thousand PSI, half the strength of the high string steel we are using in a Sterling Irons single length.

Metallurgy and Custom Fitting

In addition, we have created the body of each one of the Sterling Irons single length iron heads from 8620 soft carbon steel.

The Cobra Ones used investment cast 17-4 stainless for the body.

Ok what’s the difference?

Custom fitting is the biggest difference.

You need to be custom fit to play the best of the ability. That’s always been a main stay for the work I have done in my golf club design and it’s been a huge part of the time I have spent in researching custom fitting and writing and teaching the custom club makers how to do this better and better to custom fit golfers.

I chose the 8620 carbon steel for the body of the Sterling Irons single length irons because it can be bent more easily, plus and minus 4 degrees for lie angle changes, or if you need to tweak the loft to fill additional gaps you can bend some of lofts as well.

Club makers will all tell you when they have investment cast 17-4 stainless for the body of the heads like with the Cobra One irons, it is very difficult to bend…and if you can bend it you are only able to bend it to a degree or maybe 2 at the very most.

So the custom lie and loft fitting capability in the Sterling Irons single length irons is more than twice as good is what is in Cobra One irons.

Off the Rack vs Custom Fit

Finally, the biggest difference Sterling Irons Single Length Irons are that they are only sold as custom fit for each golfer.

Sterling Irons single length irons are not put in the any of the pro shops or the retail golf stores where the main form of business is to sell the clubs with one series of standard specifications to be sold on the standard off the rack, which is how the Cobra one single length iron is sold as one standard form to millions of golfers who are completely different from each other in their size, their strength, their athletic ability, and most of all their strength characteristics.

So, with Sterling Irons Single Length, you can only get them custom fit through a club maker or custom fit at

With Cobra it is simply one form off the rack and “we hope you play well with it”.

So these are the key benefits when you want to compare the Sterling Irons single length irons with the Cobra One single length irons.

  • With Sterling Irons you have a shorter single length, which you need for better shot consistently and more consistent on-center hits.
  • With Sterling Irons single length irons, you have a higher COR face on the 4-7 irons to help bring a higher ball speed and give you distance back at the 8-iron length of 36.5 inches.
  • The single length Cobra vs single length Sterling Irons are made with the 8620 soft carbon body for much wider range and bendability for custom fitting for lie and loft. The Cobra ones are cast from 17-4 which is very difficult to bend for loft and lie fitting.
  • And finally, Sterling Irons Single length irons are only available to golfer’s custom fit through club makers or custom fit by Cobra one are primarily sold standard off the rack in golf course retail shops or pro shops.

Those are the key differences and as a thirty-seven year designer of club heads, I really feel that the Sterling Irons Single Length hence are the best single length iron model on the market.

Thanks very much for your interest and a very best year in this great game.

Callaway Steelhead XR

Tuesday, April 11th, 2017
Callaway keeps finding ways to improve everything they do. The new Steelhead XR irons perform like a game improving iron should. Callaway has coined the phrase, “Signature shape meets breakthrough performance” and boy are they right. Their industry-leading next generation 360 face cup deliver the perfect combination of speed, forgiveness, distance and control in a Callaway iron.When they are talking about distance, they mean distance. As a single digit handicapper, I can carry my 8 iron between 160 and 165 yards. When I hit the Steelhead XR’s 8 iron, I was carrying between 169 and 175 yards. The pop and jump you get off the face of these clubs are like no other I have hit recently. I was standing there in disbelief that I just carried an 8 iron 175 yards, with little to no wind affecting the ball. Having said that, I found that my ability to shape the ball in fades and draws was a little more difficult. These clubs wouldn’t be what I would look for if I was buying new clubs, but for the average weekend golfer, you will see a major improvement with your consistency, and distance.I researched about the ultra-thin 360 face cup technology that Callaway was referring to on their website, and it says right on there that this new technology increases ball speed with greater efficiency on BOTH center hits and mishits. There is an insertion of a steel-infused polyurethane layer just behind the face of the club that really does give it a little bit of extra impact in terms of sound and feel.The cavities are made from 17-4 stainless steel too, which is always a good sign when researching clubs. The sound is a little bit hollow, so it doesn’t quite have the ‘thwack’ some may hope for, but the feel is still excellent at impact. The piece of technology, with respect to the build is the so-called “hollow thru bore.” This is effectively just a step up from the original bore-thru hosel (where the shaft runs from head to sole), which cunningly removes needless weight in the hosel, giving engineers a lot more to play with when it comes to strategic areas of the clubface, and giving MOI and forgiveness a boost.From the second you take your stance and ground your club to address the ball, these irons practically scream forgiveness. It’s amazing the psychological effect a good look can have. Diehard Callaway fans will appreciate the familiarity of that thick topline; the semblance of an offset, and of course, the longer-than-average head. In terms of the badging within the cavity at the back, they’ve done it in a pretty classy manner, and I certainly don’t mind the non-traditional hint of color there. The words ‘Steelhead’ are imposed on a holographic sheen, which is a little gimmick that might tickle your fancy too. All in all, for anyone from an 8 to a 36 handicapper, it’s pretty safe to say that you’ll look and feel the part with a bag full of Callaway Steelhead XRs.Callaway has a reputation for selling a lot of irons. These clubs are going to appeal to golfers of many shapes, sizes and abilities, and they have priced them very cleverly. These are very impressive game improvement irons, which encompass all that you’d expect in terms of distance and forgiveness. Because of the modestly price tag on this set, I feel there will be a lot of buyers out there if they get a chance to hit them at a demo day or at your local sporting goods store.

Titleist 716 AP2

Sunday, April 9th, 2017
It was that time of the year when I started shopping around for new irons, I naturally started with the company that has the reputation for producing the best clubs in the industry. The Titleist 716 AP2 irons are just plain and simply put as, “pure.” As a former Titleist 710 AP2 set owner, I was shocked at the new technology from just a few years difference. The way they feel when you first pick one up, you will feel a solid club in your hands. That solid feeling you might notice right away is because the 716 AP2’s use an average of 56.2 grams of the high-density material in the 3 through 7 irons. Its competitors don’t even approach half of that number. 3 through 7 irons use an industry-leading amount of tungsten to improve launch, ball speed and forgiveness.After taking a few practice swings, then stepping up and hitting solid shot, after solid shot, I felt a certain confidence that I could pick a spot and really go after the pin. It was that reliable in just my short time playing with them. Shiny is an understatement when it comes to the new 716 AP2’s. The club has a nice and thin topline, like traditional bladed irons, but with the appearance of a more forgiving blade. The back of the club shows a diagonally placed back bar with a nice modern touch creating a larger pocket cavity. The 716 AP2’s look fast, controllable and give you a sense of confidence as previously stated.Like any iron, when you hit the sweet spot it feels great. However, with the 716 AP2’s I felt the ball ripping of the center of the club head with a penetrating trajectory. On a miss hit just off the center, I noticed where on the club I missed and saw a very low dispersion rate. Don’t get me wrong, these aren’t the longest clubs I’ve hit, but where they lack in distance, they make up for with accuracy. When I did mishit a ball it still was very accurate, it would come up a little shorter than anticipated. Which is normally everything you ask for in a mishit. You don’t want to see your ball going 40 yards the wrong direction when you don’t hit it on the center of the face.These clubs are helped by the new stock Dynamic Gold AMT (Ascending Mass Technology) shafts, which get lighter by 3g as the irons move down through the set. Having a lighter shaft in the long irons helped maintain distance gapping through the set by accounting for the more frequent mishits via a minor increase in clubhead speed but without losing out on clubface control. The technology behind the shaft gives longer irons a lighter feel adding launch and speed, while shorter irons have heavier shafts generating better control and distance.If you’re looking for an iron that looks and feels like a true better player iron, but offers forgiveness levels similar to that of a game improver iron, the Titleist 716 AP2 iron should right at the top of your test list. The Titleist 716 AP2 irons not only look great in the bag and behind the ball, but offer performance a whole host of abilities will benefit from, starting with the Tour player down to the mid-handicap golfer. To get such high levels of forgiveness in such a compact head is an impressive feat and the AMT shafts widen what is already a strong appeal.Tour-ProvenTour-proven distance comes from consistent speed. 716 AP2 irons use extreme high density tungsten weighting to position the center of gravity low and perfectly aligned at impact for more speed.Feel & ForgivenessThe most advanced, solid feeling and forgiving Tour played irons we’ve ever made. An innovative co-forged construction with high density tungsten low and on the perimeter increases moment of inertia for speed on off-center hits.Player BenefitsSpeed from the high density tungsten, low CG design. Speed on off-center hits from the co-forged high density tungsten weights along the perimeter. Precise, Tour-proven trajectory through the set from the optimized CG progression. Fast through the turf with less dig from the slightly wider sole with trailing edge relief.

Srixon Z 565 Irons

Thursday, April 6th, 2017
You might be aware of Srixon for making some quality golf balls, but I bet you didn’t know they also make a quality variety of golf clubs too. Usually the more popular ones today are Titleist, Taylormade, Callaway and Ping, to name a few. Just because you didn’t know Srixon made irons, doesn’t mean they don’t make some of the best overall irons in the industry.In this post, I’ll be reviewing the Srixon Z 565 irons, which made golf digest’s 2017 hot list for game improvement irons. The Z565 irons combine hot flight and incredible feel in a slightly larger, more forgiving cavity-back profile. The Z 565 are aimed for players of all abilities with the forged cavity back promoting maximum distance and forgiveness.The Z series irons and utility clubs are forged from the highest quality and soft 1020 carbon steel. With a lower carbon content compared to many competitors as mentioned above, the Z iron heads are high-strength while also very responsive at impact. Srixon has combined the ultra-soft S20C head material with a high-strength SUP10 face insert that gives higher ball speed and more distance. The same Tour V.T sole and Double Laser Milled grooves ensure that the Z 565 irons offer the same excellent level of playability and control found in the Z 765 and Z 965 irons.The Z 565 irons are geared for golfers of all abilities and feature a new Tour V.T sole that allows the club head to move even more efficiently through the turf, reducing impact resistance and tightening shot dispersion for more overall control. Compared to the previous model, 5% larger grooves feature in the Z 565 irons as well as Double Laser Milling for better contact, especially in wet conditions.The first time I hit the Z 565 irons from Srixon, I was dumbfounded that I never knew about their clubs before. When you are standing over your ball, you see a beautiful, eye catching blade look, but still comes with the muscle behind it. When you strike your ball, in some cases you can actually feel your ball compress which reminds you of that responsive metal they used in making these clubs. The Z 565 is where you noticed the better feel most over the previous Z 45 irons as it felt a lot softer. The longer irons launch it on a nice high penetrating flight and even with the bigger cavity they still sounded like a solid forged iron. The face on the shorter irons might have a little more of a jumpy feel for the lower handicap players, but most will find them with a nice balance of forgiveness and distance that they are looking for. If that is the case, there is no problem going from 4 iron to 8 iron, then maybe swapping the 9 and pitching wedge from the 765 series, which are the same lofts in both sets. This is not uncommon for players to experiment with those closer shots where you really have to dial in your distance, step up, and stick to your swing for that distance.The accuracy with these clubs spare direction over distance, a small window from side to side, plenty of support on thin shots, your stronger ball strikers will make the long irons work to their advantage. The powerful, beveled sole is no joke, it eliminates the digging, or sliding through sand and thick rough, while being perfectly maneuverable with all other shot types.Srixon Z565 irons are one of the sharpest and strongest in its class. They really did an amazing job creating the perfect balance of a game-improvement iron that behaves like a genuine blade, with excellent feel and workability.SMOOTHER TURF PERFORMANCE – The new Tour V.T. Sole has been modified to move even more efficiently through the turf, reducing impact resistance and tightening shot dispersion for maximum consistency and control.UNSURPASSED FEEL WITH DISTANCE – Featuring a 1020 carbon steel body, new Z 565 irons are precision forged for the smoothest, most consistent feel. These irons feature a high-strength SUP10 face insert for higher ball speed and more distance.MORE SPIN CONTROL – All iron faces feature 5 percent larger grooves compared to the previous generation and Double Laser Milling. This improves contact, especially in wet conditions, for consistent spin and control.

JPX-900 Hot Metal Irons

Wednesday, April 5th, 2017

Mizuno is taking things up a notch with three stunning new additions to their JPX line.  Traditionally, JPX Irons have been geared towards game improvement and forgiveness, but those clever engineers over at Mizuno have found some new space-age metal that make up these irons that both tour players and bogey golfers are going to love.

Today, we’re focusing on what we think is probably the coolest new addition to the JPX line: the JPX 900 Hot Metal Irons. So, when you are standing over your ball, you see a beautiful, eye catching blade look, but still comes with the muscle behind it. When you strike your ball, in some cases you can actually “feel” your ball compress which reminds you of that soft and solid feel that Mizuno is known for.

A new steel alloy material with the catchy name of Chromoly 4140M allowed Mizuno club designers to create a full 360-degree deep undercut on the back of the iron, giving it the thinnest face in company history at just two millimeters. The face on the Mizuno JPX-900 Hot Metal Irons is incredibly hot.  The ball comes off the club face extremely hot, giving you faster ball speeds and more distance. That funky new Chromoly metal combined with the 360-Face Cup Technology allowed Mizuno club engineers to create a club face with varying thickness and an expanded hitting area. A larger club face means a more forgiving club.  In a nutshell, your mis-hits are going to be straighter and shots hit well will show even better results. The face on the JPX-900 Hot Metal Irons is incredibly thin and it’s kept strong with Mizuno’s Power Frame. The sound at impact is one of the best we’ve heard and that definitely inspires confidence.

Mizuno actually removed their handicap spectrum with the new lines of clubs, so they aren’t specifically recommending the Hot Metal Irons for a specific golfer.  That being said, the club face is a bit smaller than previous JPX generations, which better players will appreciate, while the new technology makes it a more forgiving iron, which is great for mid-high handicap golfers.

Mid-handicap golfers (5-16 handicaps) will probably see the biggest benefit from these irons, but better players and players with high handicaps could also benefit from the forgiving and fast technology.  Your best bet is to meet with a Mizuno Certified Custom Fitter where you can test the Mizuno Hot Metal Irons along with several options to find the best club for your game.

The stock shafts is True Temper’s Dynamic Golf AMT, the interesting piece about these shafts are that Mizuno went with an ascending weight design to improve the overall performance of each iron. Meaning, the 4 iron is going to be lighter than the pitching wedge. The lighter iron on the longer shaft will help golfers get more height on the ball from farther out allowing them a better height coming down and holding greens. The heavier shaft for the pitching wedge will allow better control for those shots when you have to be on target.

Mizuno JPX-900 tours retail for $1,199 and come in steel or graphite, also there is no upcharge for custom shafts or grips.




15% stronger material than 17-4 pH Stainless steel provides the added strength for our hottest face ever.

Ultra-thin face combined with our re-engineered CORTECH multi-thickness design provides superior initial ball speed for maximum distance.



More mass is pushed to the extreme perimeter of the club head for industry leading MOI POWER FRAME geometry is a result of our Harmonic Impact Technology. The rigid POWER FRAME provided an extremely solid impact sound while allowing maximum face rebound.



Through complex development techniques we were able to achieve Unitized Cup Face Geometry, delivering a massive COR AREA.

Unitized Cup Face Geometry also provides more discretionary weight than welded cup face designs, thus allowing for a deeper CG and greater forgiveness.