Aerotech SteelFiber FC Graphite Iron Shaft .355 Taper TipNo two golfers are alike and no golf shaft is one size fits all. The SteelFiber FC "Flight Control" graphite iron shafts combine the advanced composite technology of SteelFiber with variable tip stiffnessdelivering a higher ball flight in the mid and long irons while maintaining the classic SteelFiber launch in the scoring irons Technology & Features MODERATE TEMPO Tempo is not how fast you swing it, it is how you swing it fast. Tempo will affect how