The Reverse Components Seatpost Clamp is machined out of lightweight but durable 7075 aluminum. Available in a variety of colors, this minimalist styled seatpost clamp provides a dash of color and extra security for your seatpost. Features: Aluminum seatpost collar bolts on for extra security and precise torque applications Available in a variety of colors to customize your bike Specifications: Inner Diameter: 34.9mm Material: Aluminium 7075 Weight: 26g Color: Blue