ProtoConcept C01 TB Golf Irons


ProtoConcept C01 TB Golf Irons

The revolutionary C01TB irons feature the world's first integrated forging method, boasting a soft iron forged muscleback with cutting-edge ceramic technology. Every design detail, from the precision-crafted muscleback to the molded center of gravity, is based off feedback from U.S. Tour players, ensuring maximum performance with every swing.

Integrated Forging With Ceramic Inside

Ceramic, with a lower specific gravity than iron, is the built-in material. Forging soft iron into one seamless bar yields a forgiving, exact center of gravity design, surpassing the C01's built-in titanium process. From the head's center to the heel, the ceramic is integrated, stabilising head movement and providing forgiveness. This complex built-in ceramic design, with forged face integrity, is distinct and hard-to-achieve for others.

Center of Gravity Design For Each Club Number By 3D CAD

Utilising the concept of the preceding C01 muscled iron with cavity back forgiveness, 3D CAD was employed to craft a unique center of gravity design for each club, providing optimal functionality and balance for the set. Maneuverability and precision akin to musclebacks was preserved while head movement stability was improved to align the sweet spot and desired trajectory.

Functions Sought From Irons Were Further Refined Based on Feedback Received At US Tours

Drawing on feedback from Tour pros who've utilised PROTOCONCEPT. They have enhanced the musclebacked design of this iron set to meet the needs of even top golfers. Experience improved head movement and face rotation for exceptional trajectory control as well as effortless mobility. The long irons encourage higher launch with the short irons delivering more stoppage - plus just the right height and spin - for a unified set.


Club Loft Lie Bounce FP
5 25° 60.5° 4.1mm
6 28° 61° 4.2mm
7 32° 61.5° 4.3mm
8 36° 62° 4.4mm
9 40° 62.5° 4.6mm
PW 45° 63° 4.9mm

Pickup available at Golf Tech UK

Usually ready in 5+ days


Product information


What happens if I can’t select the combination of head, shaft & grip I want?

Email us on or call 020 3995 5638 we would be more than happy to discuss and prepare a custom quote.

I am purchasing from outside of the UK, what happens with TAX / Customs duty?

All orders show and charge TAX / Duties at checkout so there will be no additional payment required to the courier. Goods will be delivered duties paid (DDP)

Do you offer advice prior to purchase if I am unsure which product to choose?

We understand and recommend trying / having a fitting prior to any purchase but should this not be possible our team will be more than happy to help you through any purchase. Either via email or on the phone.

I paid for Express shipping, why hasn't it shipped next day? 

Express shipping is the fastest possible shipping service, unfortunately it is not a way of getting your custom order built faster.

What if I can’t find an option I want on a drop-down menu?

If you can’t find a grip or shaft that you would like to order then please do reach out to us or place an order and leave a note on the order. One of our team will be happy to help you through the process. 

Nine by Nine Golf

Nine by Nine Golf is a supplier of high quality golf equipment. Golf is about performance and the brands we sell will help you achieve your highest performance on the course.

The Nine by Nine team has a long history with the game of golf as well as a deep knowledge and understanding of the technology and products on offer.

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