SHAFT IRON AEROTECH STEEL FIBER I70 PARALELSHAFT IRON AEROTECH STEEL FIBER I70 PARALEL Overview The lightest SteelFiber shaft in our lineup is a great shaft for those slower swing speed players looking to raise ball flight and gain as much yardage as possible. This iron golf shaft is offered in a wide range of flexes and can hold up to even the most demanding swings. If a player is looking for all of the swing speed they can get or they're looking to play the golf club substantially over