With more PGA Tour wins than any other graphite Iron shaft in history, SteelFiber golf shafts by Aerotech Golf are a true game-changer and improve your game. The Aerotech SteelFiber-shafts combine the power of graphite and the stability of steel. The vibration dampening properties of the inner core reduce the risk of injury and player fatigue. Additionally it promotes greater distance. The steel fiber surface layer delivers the desired stiffness and strength properties at lighter weights than steel.