Seatpost clamp with integrated cover prevents dirt and mud from entering the frame at the seatpost junction Chamfered edges and ovalized hole design protects carbon frames and seatposts AL6061-T6 alloy clamp with NBR cover ?31.8mm for ?27.2mm seat posts and ?34.9mm for ?31.6mm seat posts 16mm height 31.8 Black AlloyUPC/EAN/GTIN: 888571054338