Blackstone Collection from One Iron Golf.
Blackstone Irons 8 Iron Set
Blackstone 6 Iron Set Club Faces
Blackstone Wedges on White Background
One Iron Golf Blackstone Iron Line Specifications Chart
Iron Headcovers
Distance clips in Product Bag on White Background
Blackstone Irons Closeup on Hardwood Floor
Closeup of Grip used on One Iron Golf clubs
Blackstone Irons 8 Iron Set Soles
Blackstone Irons 8 Iron Set Soles
Blackstone Collection from One Iron Golf.
Blackstone Irons 8 Iron Set
Blackstone 6 Iron Set Club Faces
Blackstone Wedges on White Background
One Iron Golf Blackstone Iron Line Specifications Chart
Iron Headcovers
Distance clips in Product Bag on White Background
Blackstone Irons Closeup on Hardwood Floor
Closeup of Grip used on One Iron Golf clubs
Blackstone Irons 8 Iron Set Soles
Blackstone Irons 8 Iron Set Soles

Blackstone Irons

Regular price $799.00

Shipping calculated at checkout.

Since we custom build all orders, please allow 7-10 business days for your order to ship. For questions, please contact us. Thank you!

Our Left Handed Blackstones will be available in April 2022!

Our premier line of irons are without a doubt the most advanced set of single-length irons in the golf industry. Our iron lines are not built for any particular handicap, age, or skill level. Capitalize on precision and accurate shot making with the Blackstones. Proper clubface alignment at address is everything when it comes to dropping approach shots on the pin. Alignment being off by only 1º or 2º either way means adding an extra 8 to 15 feet to your birdie putt. The Blackstone's bright white scoring lines against the black PVD background makes club-face alignment exact and automatic at address. With a set of Blackstones you will find a lot more birdies on the golf course. Check out our Irons page for more details.
  • Custom Built: Custom built single-length irons fitted based upon your wrist-to-floor measurement. All Blackstone Irons come with head covers. Distance clips are included in Blackstone Irons Sets. Conforms with the Rules of Golf and built in the USA.
  • Shaft: Shafted with our proprietary Black Steel shafts for zero glare and extreme tour performance with shaft flex plane orientation (Spine Align/Puring), and identical shaft flex throughout the set.
  • Clubhead: Loft angles instead of club numbering for precise distance control with bright white scoring lines for precise clubface alignment at address. State of the art precision face and sole grinding. The deep undercut rear cavity produces a low center of gravity for maximum trajectory and distance with identical swing-weight and moment of inertia (MOI) throughout the set.
  • Grips: Installed with 1/16” oversized textured grips.
  • Finish: Black PVD (Physical Vapor Deposition) finish for zero glare at address. PVD finish produces a harder surface for extra ball compression and greater distance. Bright white scoring lines for precise clubface alignment at address.
  • Experience: Enjoy greater consistency with a custom built set of single length irons and woods. Being in business for over 20 years we have perfected single length play. Ditch convention for common sense.

Shop the Blackstone Combo Sets and Used/Demo Blackstone Iron Line.

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 upon your wrist-to-floor measurement we adjust your club length to correspond to the lie angle of our club-heads in order to ensure a proper fitting.

Wrist-to-Floor Measurement
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).
  • 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

One Iron Golf Club Lengths - Wrist to Floor Measurements

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 club-head, 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 club-head 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.

Why Conventional Custom Fitting Does Not Work


  • Free Shipping on all purchases within the Continental USA.
  • You can purchase your items using any of the options listed during checkout.
  • Big purchase? 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.
  • Ohio residents will be charged 7.25% sales tax.

International Ordering

  • *Free International Shipping on all purchases over $600 USD *(exceptions are South Africa and Ghana where we provide free international shipping on purchases over $1,000 USD)
  • We ship worldwide and we cover the brokerage/clearance fees.
  • Import duties and taxes are the responsibility of the customer and will be collected by the carrier at time of delivery.
    • If these taxes are not paid your order will be shipped back to us and we will deduct from your refund the cost of shipping both ways and the import duties/taxes charged to us.
    • Not sure if you will need to pay import duties and taxes? Check with your local customs office for estimated duties/taxes, or use this link for an estimate in your currency.

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/duties and taxes incurred. We will not accept any return package where a payment is due - the shipment will be returned to you at your cost. Any charges incurred by us will be deducted from your refund.

Order Cancellations

You may cancel your order if it has not already shipped, after it leaves our facility it is subject to the Refund Policy (see above). All cancelled orders will be subject to all credit card processing fees assessed 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.

Customer Reviews

Based on 7 reviews
Kent R. (Fernandina Beach, US)
1Iron - The Apple of Golf Clubs

Steve Jobs created Apple to make “insanely great computers, then portable music players, the mobile phones, then watches, then who knows what. The mission was products designed to make the user experience “perfect, and totally natural and simple”. Apple is now the largest company in the world using that simple formula. 1Iron Golf brings that same total determination to the design and manufacture of golf clubs. I was sold after investigating it upon hearing the odd idea of “single length golf clubs”. When I investigated, I discovered that the idea is pure genius because it is “simple, natural, easy and logical”, like all the Apple stuff I already used. I have now purchased two sets of 1Irons, the Pro, then the Blackstone. Then I added the Woods, and then.the Dark Horse Driver, and finally the Big O Putter. Every one of them is a joy to use. My game, which was high handicap, has improved with both better distance and incredible accuracy. I have limits based on my odd swing, but 1Iron Clubs have allowed me to get the maximum out of very limited talent. I love these clubs, but more important I love the company and David Lake and Matt Lake and their incredible laser like focus on making golf clubs work with intelligent design, and high quality materials. Most important is the 1Iron Company focus on customer satisfaction. David Lake took serious time to explain to me the reasons for the design when I was thinking about the decision. That made all the difference. Then, after my purchase, the company has stood by its products like no other company I have ever done business with. I believe 1Iron Golf, and its leaders will not allow a customer to be unsatisfied. They are that determined to achieve the highest customer satisfaction. I will never even try another manufacturer. I am a customer for life as I try to achieve perfection in golf, which I know in my case will never happen. But 1Iron is a partner who makes me believe it is possible.

Samuel O. (Ocean View, US)

Please send this to me in April I just had surgery and unable to use the clubs at this time thank you happy new year

Brigham L. (Vancouver, US)
Amazing Product

If you are thinking of going with single length clubs this is the best of the bunch. Had the cobras and really struggled with consistency. Not with these Blackstone irons and the wonderful customer service. Just do it.

Garry B. (Kent, US)
Exceed my expectations!

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.

Lori C. (Santa Ana, US)
Very sweet

I love the single length concept. The Blackstone Irons work perfectly for me, a 65y.o. 5'3 average weight female. These clubs are weighted lovely, easy to manage, and have wonderful feel when the ball hits the face. I think the grips may be a little too thick for my hands. But it kind of helps when I have long nails. So maybe that is a good thing?