Chromag Seatpost clamp with QR 35mm PurpleVery user friendly and design removes need for high hand torque on clamp Features a unique brass bushing that contacts the entire cam surface for the smoothest, most powerful action possible Long rounded surface lever 6mm bolt CNC machined in Whistler, Canada Polished and hard anodized 35mm clamp diameter Weight: 54g TECH SPECS Seat Tube Diameter 35mm Seat Post Collar Type QR Primary Color Purple Collar Weight 19g Material Aluminum