The shaft make-up in the 721 Series is unique to the industry. We tested an extensive range of market-leading shafts with our Tour Edge Development robot to find the the best-performing custom shafts for every swing speed.
85 MPH or below: Fujikura Air Speeder: Ladies 35 (R3) | 40 A-Flex (R2) | 40 Regular (R)
85-95 MPH:Fujikura Ventus Red 4T Core: 50 R
95-105 MPH:Project X HZRDUS Smoke Blue RDX: 60 6.0(S)
105+ MPH:Project X HZRDUS Smoke Black RDX: 60 6.5(X)