**This item is a custom built iron set and the listing is for the heads only. Shafts must be purchased and built with the set.**
At time of purchase, please add your desired shafts and include any build specs in your order notes.
After purchase, you will be contacted for your build specs and requested shaft (if not purchased together).
A new-generation muscleback iron crafted
with revolutionary development through integrated forging
with pure titanium inside
This muscleback incorporates an outstanding 25 g of titanium inside through forging with a round rod.
While maintaining the beautiful muscleback figure, extra weight is distributed to the periphery to attain the same forgiveness of a cavity back iron.
PROTO-CONCEPT’s flagship model takes advantage of the feel and maneuverability that are the greatest advantages of musclebacks while providing forgiveness.
- Carbon steel(S20C)Forged #5～#7 / Inner Titanium
Carbon steel(S25C)Forged #8～PW
- Satin Finish / Mirror finish on back of face