High performance lightweight oversized alloy 7075 T6 stem as used by the top pro tour riders.3D forged 7075 T6 alloy construction increases strength & keeps the weight down Triangular design gives optimal stiffness to weight ratio Oversized 31.8 mm clamp diameter reduces unwanted flex under high load by increasing strength & stiffness Angle:-10 degrees For 1-1/8 inch diameter steerer tubes Average weight 120 grams for 110 mm length