"S" is of course taken by "stiff." Some golf shafts bend more than others ... Speed/Carry Guidelines for Driver If your ...

Nowadays, almost all the golf drivers available on the market are graphite shafts, for the simple reason that they are lightweight, plus they can be as flexible or stiff as you would prefer.

Shafts are important in all golf clubs, but especially drivers. Using lighter, less stiff shafts will produce a higher, right-to-left biased ball flight, while heavier, stiff shafts will launch ...