Contrary to popular belief, when it comes to carbon fiber, stiffness and strength are not the same. Often a stiff material is very brittle, and a strong material is not very stiff. This makes shaft engineers develop a combination of multiple materials to try and dial in ideal strength and stiffness properties for a certain shaft, and in doing so, creates trade-offs when trying to design a lightweight, stable shaft that delivers maximum energy transfer. This is where Hexcel’s® most advanced HexTow® carbon fiber comes in: iM10. The iM10 family of shafts are the first Project X shafts to feature Hexcel’s® incredibly unique iM10 carbon fiber, a very high modulus (stiff) and very high strength carbon fiber allowing for new possibilities in golf shaft design. iM10 shafts offer unmatched stability in both a playable mid launch/spin design and a counterbalanced low launch/spin tour design—providing a variety of options to best suit your game.