Custom Fitting Single Length Irons
All human beings share the same skeletal, muscle, tendon, and joint functions and from a mechanical standpoint are the same regardless of height or sex. Non-mechanical differences arise in custom fitting however, for instance: the height of a bicycle seat needs to be greater for a taller person than a shorter person even though the mechanical design of the bicycle remains the same. By the same token, there is only one true fitting variable in the building of golf clubs and that is club length. Based on your wrist-to-floor measurement, we adjust your club length to correspond to our clubheads' lie angle to ensure a proper fitting.
Taking your Wrist-to-Floor Measurement:
- The wrist-to-floor measurement should be taken while standing on a hard surface.
- Wear jogging/gym shoes (not golf shoes) not in excess of 1.5" sole.
- Stand with your back against the wall at strict military attention. Place your shoulders and head against the wall, your feet together, and your arms rigid and straight down at your sides.
- Hold a pencil in your right hand (right handed golfer). Back your arms against the wall and then take the pencil and make a mark where your left wrist joint hits the wall. Just the opposite for a left-handed golfer.
- Measure from this mark to the floor.
- Important: Do not round-up the measurement to the next higher inch increment. For instance, if your measurement is 34 and 7/8″, do not round up to 35″.
One Iron Golf Club Lengths
NOVA and GRIA Hybrid Club Lengths
How to correctly measure your clubs:
Club length is properly measured by placing the golf club in the address position with the scoring lines on the club face parallel to the ground and then measuring directly alongside the shaft from the butt end of the grip to the point where the shaft would intersect the ground if it extended through the heel of the club head.
Very Important:
Do not order based upon what you consider to be your favorite iron (ie: #7 iron), and do not use that corresponding wrist-to-floor measurement when placing your order. When ordering you need to specify your actual wrist-to-floor measurement to ensure a proper fitting. This chart reflects club length based upon our club-head lie angles. Consequently, our fitting process does not apply to any other brand.
For the taller golfer: based upon your wrist-to-floor measurement you may be concerned that your irons would be a typical #3 or #4 iron club length; however, do not compare your measurement to your current #3 or #4 iron. The lie angles of your “long” irons are much flatter than ours which, at your size, requires you to bend over excessively and reach out for the ball at address. The club head lie angle of our irons is 63.5º which is far more upright and allows you, for the first time, to stand upright and much closer to the ball at address resulting in the ideal upright swing posture and swing plane. The taller golfer benefits the most from our fitting formula since they have never played golf clubs that have even come close to fitting them properly. The result being that they have had to develop a very inefficient posture and swing where they are bent over excessively and reaching way out for the ball with every iron in the bag.
How Does the Wrist-to-Floor Measurement Work?
It is based upon trigonometry. At the point of ball impact in the downswing, your wrist, the ground, and the clubhead, form a right triangle. Assuming an ideal swing posture, there is a non-linear mathematical relationship between your wrist-to-floor measurement while standing at attention and your wrist-to-ground distance at ball impact.
The clubhead lie angles are known for the irons and fairway woods as well as the length of one side of the right triangle based upon your mathematically factored wrist-to-ground distance at impact. This gives us the measurement of two angles and the length of one side. We then use trigonometry to solve for the hypotenuse or club length. This is somewhat oversimplified as we factor in shaft deflection and numerous other factors. The fitting formula that we developed produces the ideal golf club length for anyone regardless of height or arm length.
Ordering
- Free Shipping on all purchases over $100 USD within the Continental USA.
- You can purchase your items using any of the payment options listed during checkout.
- Big purchase? If you live in the USA choose Shop Pay at checkout to pay in full or split your purchase into 4 equal installments. Learn more and prequalify during checkout!
- You will receive an email from us with your tracking number.
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Ohio residents will be charged 7.25% sales tax.
International Ordering
- We ship worldwide.
- Shipping charges and Import duties and taxes are the responsibility of the customer and will be collected/billed at delivery by FedEx.
Return Policy
Fully try-out our golf clubs at your home course and at your convenience for a full month. We feel that to truly evaluate a set of golf clubs to determine if they are right for you takes time; and hence, our 30-day return policy (does not include Used/Demo golf clubs, Accessories, or Special Orders). To our knowledge we are the only golf club manufacturer in the entire industry who offers a full money-back return policy on golf clubs after they have been played which should tell you volumes about our commitment to our customers.
If you are not completely satisfied you may return your golf clubs within 30-days of receipt for a full refund of your original purchase price (no hidden fees or re-stocking charges). A return authorization must be obtained before we can accept a return of merchandise. Contact us for this authorization on-line through the Contact page of this website. Shipping/handling charges are not refundable. All contents listed on the original Packing Slip must be included for a full refund. Return shipping charges are the responsibility of the customer. Our return policy is only valid once per customer. Any alterations to the original golf club voids this policy.
If shipping from outside the USA make sure to show that the country of origin is the USA and is a return of USA manufactured goods on the customs form. Also, be sure to make clear that you (the shipper) are responsible for all shipping charges and any brokerage/storage/handling/
Order Cancellations
If you cancel your order prior to it being shipped your refund will be subject to all credit card processing fees assessed which will be deducted from your refund. If you cancel your order after it has shipped you will have to return it to us at your cost. Once we receive the returned order your refund will be subject to all credit card processing fees assessed plus our shipping cost to you which will be deducted from your refund.
Limited Warranty
We warrant our golf clubs to be free of defects in material and workmanship for a period of one year following the original ship date. We will, without charge to the original purchaser, repair or replace the club if it proves to be defective during normal use within this period (normal use does not include misuse or abuse and the associated damages ie: dents on the top, side, rear, or sole of a wood club-head). This does not cover grip or cosmetic wear and tear due to normal usage. Any alterations to the original golf club voids this warranty.
So I started playing in the spring of 2021…. I become obsessed with stuff when I get interested. I have had 3 major back surgeries so I wanted same length irons and extra tall clubs because I struggle to bend at the waist or turn my hips. I’m 6’4 and wanted extra long clubs. I stumbled onto 1 Iron and I’m glad I did. I bought the full line of Blackstone, all the wedges, the Driver and putter as ling as I could get them. I’m dropping strokes the more and more I become comfortable the better I’ve become.
May not seem like a lot to more experienced players but I shot a 43 today on 9. I had a terrible first hole and rimmed 3 putts. I realistically could of had a 40. I had a 290yd Drive. I’ve only been playing for 15 months. I’ve had my 1 Irons since Christmas and live in the Midwest so I didn’t start using them until April, three months ago.
I highly recommend!
I play 3-4 times a week and the pic of the clubs is after about 25 rounds.
I've had my Blackstone irons for approximately 3 weeks now and I'm loving my purchase and couldn't be happier. Having the club's custom fit to my wrist to floor measurement has made all of the difference. I've been able to groove my swing and are hitting my irons crisply. The most challenging part has been the wedges, but with practice, each day I get more consistent in hitting them. Thanks David for a great product and I appreciate all of the articles and information you have on the website. I researched and read everything before my purchase and the tips you have provided on your website are extremely valuable. Thanks again.
Trae- Menifee, CA
I purchased a full set of demo/used Blackstones, 3-LW and took them on vacation with me recently. Some info about me: I’m 6’3 and swing a driver around 112 mph with ball speeds around 160, though I can at times put it out farther when all is clicking. I have been playing Taylormade P790 with X100 Tour Issue shafts the last 3 seasons. Love my 6i and 8i, hate my 5i and 7i and regularly miss the green from easy spots with my PW and 9i thanks to pulled shots. I live in NE WI and the weather in the winter is brutal. I had been planning a full-bag renovation at Club Champion, but thinking about my game and reading about these clubs, it just made too much sense to my engineer brain…but I had some questions. Questions a trip to Aruba would answer over the course of a week of absolutely fascinating golf learning.
Question 1: they are cast…how do they feel?
Question 2: will the shafts hold up to my speed and sometimes violent transition? Would the spin be way too high…especially in constant 20-30+mph winds from the east on coastal links?
Question 3: what would really, really long sand and lob wedges be like?
The reality is that the feel of a shot hit on the screws is very, very pleasant with these clubs. I hit 4 and 5 irons on the button a number of times…after bunting one into the long stuff, pulling a couple and hitting them way shorter than I thought I should a few times. But on hole 6, after a snapped drive into the wind, I sizzled a 4i onto the green from 180 into the gale. I was dumbstruck how good that shot felt; how far it went into the wind and how it was sitting next to the stick when I got up there.
I had absolutely zero trouble with shots ballooning; only a couple short iron shots ran away from me down wind and I could accurately club up or down for what I was facing.
Lastly, after having some really good and really bad results with the 55 and 59, I have come sprinting back to my wedges. I am going to play the 51 for a while because it is so good on full shots, but my vokeys were back in the bag as soon as I got home. Some of it is that I haven’t had time to practice with these and the ball positions you need to play partial shots around the green, but a smaller swing radius makes more sense to me.
I played two rounds and had three range sessions with the wind straight in my face at Tierra Del Sol and have figured out how to hit several different shots with the Blackstones, but mostly they go were you point them…which for a 15.6 that longs for his days under 10, is a miracle.
I’ve built clubs and have done my own shafting, regripping, loft/lie bending etc for friends and family and am a huge believer in spine aligning clubs the way 1irongolf does. It makes a difference.
This is a wonderful concept and is very well executed. My P790s are on the trading block on Golfwrx as I write this. I did notice the black finish come off the shaft of the LW after a massive lash through some underbrush on a downwind par3 where I should have clubbed down a club or two more because of how pure and high I hit it and the rocky terrain left a number of silvery scratches on the soles and leading edges of several of the clubs…things you don’t see with a standard finish…but these things are good…really good.
Thanks for making a unique and outstanding product.
I have golfed Cobra One Length for 3 seasons and believe in the concept. I wanted to upgrade my set and chose 1 Iron Golf. I bought the whole set, driver, 3 wood and 8 irons. I am 65, golf on average150 rounds of a year and my GHIN average score is 87. I have played with my 1 Irons for 2 weeks and have shot 82, 84, 78, 79, 84 and a 86. That is unreal! The driver and 3 wood go amazingly straight and the biggest surprise is how well I hit the long irons. I have to figure out the distances, hence the 86, but I am sold and would recommend these clubs to anyone. Thrilled in Seattle.
Still getting used to the new clubs. I like the feel. Hitting the irons higher with more accuracy. Ball “jumps” off the fairway woods. I just need to learn not to over swing!
I love these clubs. I had a set of Callaway one length, wanted new ones and saw your website. I like these a lot better, love the weight of them. Had friends who liked them also, and are thinking about getting some.Thanks again for making such fantastic clubs.
I found that the clear coating finish on the striking surface is peeling back. This will only spread and detract from the nice black finish. Is there anything you can do for me to make this right?
Thanks,
PFleming 330) 600-8931
The set as a whole is amazing! I’ve always wanted to try a set that was custom fit to me and all one length. Watching golfers adjust posture for each club, myself included, just seemed to add extra to the process and I found it unnecessary. After getting mine last year I decided a gap wedge was needed so I ordered a 51°. Love it! These are by far the best clubs I’ve ever hit!
I’ve recently bought a set of Blackstones and can easily say they are the best clubs I’ve ever owned in my golfing life (almost 50 years). First round back playing after a while and birdied 3 of the 4 par 3’s with almost 2 hole in ones. So close!! Highly recommended 👌🏼
I recently purchased a set of Blackstone one‑length irons from a local golf shop, and even though I bought the demo set, the quality has been nothing short of outstanding.The heads, shafts, and grips all feel solid and well‑built, with the kind of confidence‑inspiring look and feel you expect from a premium set of clubs.
What has impressed me the most is how easy it is to move from one club to the next without having to think about setup changes or make constant adjustments.Because every iron is the same length, my stance, posture, and ball position stay the same, and my swing feels repeatable throughout the bag. The result was almost immediate: my strike consistency improved right away, and my contact now feels much more solid and predictable from club to club.
If you’re curious about single‑length irons or have struggled with consistency, I highly recommend giving these Blackstone clubs a try.
This set is just what I wanted, I also ordered new wedges to go with them and other than the plastic wrap on the new ones, I could not tell the difference. These hit long, the stiff shafts are sensitive to club face angle, so I am working on that.
I really like the look and feel just holding them in my hands. I have a good feeling that I’ll be very happy with them next summer…
Expect to chip in on a regular basis with these wedges.
With my new upright swing everything goes straight and my Dark Horse driver out hits my $600 Callaway AI driver by 20+ yards
Too many questions with the new clubs. Questions about standing distance from ball etc……. BUT….like the manual says …… Practice teaches you every thing you need to know.
2 days at the range recording every shot and then back at home to analyze the data gave me a chart to know exactly which club to grab
There is only 1 swing and ball position - Yahoooooo - my life is simple now
My back thanks you too and that was the main need.
I purchased the Blackstone iron set 3-PW in early Sept, there was an error with the clubs I received so I contacted them and they immediately acknowledged the error, took responsibility for the error and shipped out another set NIB the next day. So the customer service was great, sometimes things happen and it was taken care of. I’ve played 27 holes with my new Blackstones and I like them, they immediately made a difference. It takes more than 27 holes to readjust and master my new swing (with all irons being identical weight and length) but the concept of a his design quickly made a difference in my consistency and eliminated two ugly shots per round. With some more practice, which gold requires regardless of your clubs, I am confident I will enjoy these clubs for years and drop at least 6-7 strokes off my game within 3 months and probably a couple more as time goes on. And I’ve received many compliments on how striking these clubs look.
Updated review. I’ve played 63 holes with these clubs, they have made a significant difference in my game. Mishits are 90% improves, swing confidence is higher, smash factor is very high.
Used/Demo Blackstone Irons - Now 25% OFF!
I'm just over 6'4 and got the 39" 11 club set 19 degree to 59 degree. They are the perfect length and feel great. I played my variable length irons at 1.25" longer than standard, so for me these irons ended up being the same length as my 5 iron. Tall golfers should not hesitate to use single length irons.
Used/Demo Blackstone Irons - Now 25% OFF!
Love mine
I have a set of the Blackstone irons and they are everything as advertised they approve my game by a minimum to 10 strokes. I just purchased Fairway wood and very satisfying.
Love mine
I bought “Demo” 1Iron clubs in 2011 and used them continuously until 2024. They arrived unmarked and still look like new despite heavy use. I have often extolled the virtues and quality of the clubs. In comparison with my Blackstone Demo” purchase I am disappointed. The company service still remains very professional but the chip and scratch damage on 7 of the 11 clubs detracted from the enjoyment. Most marks seem to have been “Black marker pen” fix but several deep scratches to base metal left. Yes, the risk of saving on purchasing “Demo”clubs. I ignored my intuition that the anodising may be easily damaged and doubt now they could give the service I enjoyed with my previous set.
Actually would like to return, don't know exact date of purchase
I recently needed to replace a lost club from my OneIron set. The response was rapid, delivery prompt, and the club matched my set perfectly. I am very pleased with the service I received.
I am an average golfer from Whites.. low to mid 90’s. The first time I played with them I hit the high and longer then ever. I love the feel and balance of the clubs. I still have work to do on my swing but the clubs are everything you advertised… the 3rd time I played I Cut 8 shots off my normal scores and now in the low to mid 80’s. Very happy that I purchased them
