Product Overview: PROFORCE V2 Black Wood Driver Shaft For the player seeking a medium ball flight, increased ball speed and superior control. Features: LONG PARALLEL BUTT DESIGN: Provides greater control in the hands of the golfer for both aggressive and smooth tempo golfers. STIFF TIP TECHNOLOGY: Stiffer tip provides golfers more spin control at impact. RECOIL TECHNOLOGY: Provides optimal spring effect in the walls of the shaft and more efficient energy transfer to the ball for increased velocity and greater distance. Specs: PROFORCE V2 Black 6F3 Flex: Regular Weight: 65g PROFORCE V2 Black 6F4 Flex: Stiff Weight: 66g PROFORCE V2 Black 6F5 Flex: X-Stiff PROFORCE V2 Black 7F4 Weight: 76g PROFORCE V2 Black 7F5 X 76g