The Aerotech Steelfiber graphite iron shaft is available in .370" tip diameter in four weight profiles. Features: SteelFiber 70 Iron Shafts: For slower swing speed players needing more distance SteelFiber 80 Iron Shafts: Designed for the player looking to gain distance without sacrificing control SteelFiber 95 Iron Shafts: Designed to give the strongest players a true alternative to steel SteelFiber 110 Iron Shafts: Provides the trajectory control desired by stronger players. Golf Shafts from the Aerotech brand.