Pro-Line Irons Combo Sets - #5 and #7 Low-Profile Fairways Woods and #5 iron - PW
Photo of Low-Profile Fairway woods sole and glossy blue head
1 Iron Dark Horse Driver
1 Iron Dark Horse Driver
Various angles of the Pro-Line Irons
Pro-Line Complete Sets - 1 Iron Golf
Pro-Line Irons Combo Sets - Dark Horse Driver, #3 Wood, and #3 iron - Lob Wedge
Pro-Line Irons Combo Sets - Dark Horse Driver, #3, #5, #7 Woods, and #5 iron - Lob Wedge
Pro-Line Irons Combo Sets - #5 and #7 Low-Profile Fairways Woods and #5 iron - PW
Photo of Low-Profile Fairway woods sole and glossy blue head
1 Iron Dark Horse Driver
1 Iron Dark Horse Driver
Various angles of the Pro-Line Irons
Pro-Line Complete Sets - 1 Iron Golf
Pro-Line Irons Combo Sets - Dark Horse Driver, #3 Wood, and #3 iron - Lob Wedge
Pro-Line Irons Combo Sets - Dark Horse Driver, #3, #5, #7 Woods, and #5 iron - Lob Wedge

Pro-Line Complete Sets

Regular price $1,017.00 Sale price $711.90

Shipping calculated at checkout.

 Choose your perfect set makeup from the options listed.

 Since we custom build all orders, please allow 7-10 business days for your order to ship. For questions, please contact us or visit the Irons page and Woods page for more specification details. Thank you!

Precision Tooling, Shaft Balancing, and Club Stability for the ultimate in Precise Shot Making.

Based upon the proven clubhead design of our original 1 Irons, we designed the Pro-Line for the next-level golfer looking to maximize distance without compromising accuracy. This iron line is modeled after touring irons, incorporating the design features that professional golfers prefer: lighter clubhead weight for added swing speed, 2º stronger loft angles for a more penetrating ball flight, and a stiffer shaft tip section for enhanced stability through impact. 

Maximize your distance without compromising accuracy.

  • Custom Built: Custom built single-length irons fitted based upon your wrist-to-floor measurement (see below for instructions).  See chart for corresponding club lengths. 
  • Club Length: Identical club length throughout the set of irons - see corresponding finished club length for irons, woods, and the driver in parenthesis next to your wrist-to-floor measurement.
  • Shafts: Irons are Fairway Woods are steel shafted for the highest level of consistency/accuracy. Pro-Line irons and Low Pro-File Fairway Woods are built with a chrome plated optimized steel shaft. The 1 Iron Dark Horse Driver is Shafted with our exclusive One Iron Golf ultra light graphite shaft, for maximum transfer of power plus a stunning increase in control and accuracy.
  • Grips: Installed with oversized grips.
  • Head covers: All woods come with head covers. Purchase iron head covers for the Pro-Lines here.
  • Experience: Enjoy greater consistency with a custom built set of single length irons and woods. Being in business for 25 years we have perfected single length play. Ditch convention for common sense.
  • Identical clubhead lie angle, swing-weight and (MOI), and shaft flex throughout the set of irons.
  • Shaft flex plane orientation (Spine Align/Puring) performed on all clubs.
  • Available in Right and Left Hand.
  • Conforms with the Rules of Golf.
  • Custom built in the USA by Master Club Builders.

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) 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

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 over $100 USD within the Continental USA.
  • You can purchase your items using any of the 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.
  • Ohio residents will be charged 7.25% sales tax.

International Ordering

  • Free International Shipping on all 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

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.

Customer Reviews

Based on 23 reviews
Daniel d. (Valparaiso, US)
Iron woods set

New to the game, just started playing. Change into one iron’s One length irons has improve my consistent striking. Still waiting for scores to drop, however will continue play these clubs

James O.

Clubs are works as advertised

craig K. (Manitowoc, US)
Blackstone 14 club set

I got back into golfing after about 10 years. My old set was broke down and I started researching clubs. I always found my longer irons and even my driver way harder to hit than my 6.7.8 etc. Found these and decided to take a chance. They are amazing. For a weekend golfer that doesn’t have a ton of time to hit the driving range or play a lot, these are like hitting your favorite club all the time.

Mauro R. (Farmingdale, US)
Just not working for me

I have given the clubs a full and fair 3 week "tryout". Unfortunately, they do not meet up to the results I had hoped for or anticipated. I gave them a ranking of 3, as they are not a bad looking set by any means and when I was able to make solid contact, they performed OK, but still not up to that of my "gamers". Was hoping that would not be the case, but what didn't work best for me, may and could work well for someone else. Woods worked better than irons for me, but still could not match what I currently had in my bag.
I will be looking to return them under the 30-day, money back guarantee offered. I will do this in a separate email, so feel free to remove that part of this review, should you want to post this on your site.
I much appreciate the opportunity to try these unique clubs.
Mauro Raccuglia

stephen w. (Farmingdale, US)
I will be returning the clubs

Great look. The ball doesn’t come off the club face like my Mavriks. 11/2 to 2 club distance shorter with the One Iron

Hi! Thanks for the review, we have reached out to you via email as well. Yes, it is understandable that you lost yardage with our irons unless you compare the actual loft angle to what you were using to the loft angle of our irons. Almost all manufacturers have strengthened the loft angle on their irons by 1 club, we have not done this. Read the following article I wrote specifically on this, The Truth About Loft Angles: - which will give you a much better understanding. You can see all our loft angles for each line on our Irons Page -->

Brian (Rochester, US)
Well worth it.

Got my new Blackstones one week ago. Still getting used to them but I'm hitting the ball way better with thses clubs. Straight crisp shots. The biggest difference is I dont have to worry about my stance and posture anymore. That alone is huge for me. Most likely the last set i'll need to buy. Clubs shipped in 7 days great service.

Charles P. (New York, US)

Played 9 rounds. Driver and woods are working well. Irons are hot and cold. Not worried about the learning curve. Like the weight and feel. Side note, the head covers are not that good, they do not stay on the woods.

James M. (Huntley, US)
New Life to My Golf Game

Very happy with the set. Being shorter, I never thought about single length clubs. Have reduced my average round by 10+ strokes over the first six rounds. Absolutely love the woods, fewer slices to deal with! Thanks!

Tony V. (Mukwonago, US)
Best Golf Investment Ever!

Been told to take the traditional 3w,3i,4i,5i, and LW out of bag since I have a slow swing speed (85) and high handicap. This all flew out the window when I bought the Pro-Lines (Drv/3w/3i-LW). I can now hit these Pro-lines so easily; all of them! Gained so much confidence now that the setup is the same through the irons. I follow the Graves Golf SPS method, and this set is perfect for it. Following the GGA Alignment and Ball Position Trainer to set up irons like a 7i and matching the 3w and Drv setup. Grips and lie angle work perfectly as per GGA recommendations. The LW is incredible and so much easier to hit than a traditional length club that I've been using it for most pitching and chipping shots. I gained 40 yds on my driver, 30 on 3w, and 10 on the irons. First round with this set and I dropped 10 points! Love these new clubs!!

Scot B. (Toronto, CA)
Blackstone Complete Set

Very well built clubs. Loving the Dark Horse driver. 19, 23 degree irons are taking a bit longer to adjust to but enjoying the process and being patient. Single length simplifies my swing. Thank you !