Item Type: Bicycle Seat Post ClampMaterial: Aluminum AlloyProduct Specification: Approx. 31.8mm/1.3inSize: Approx. 36x44mm / 1.4x1.7in 1QUICK RELEASE: Bike pipe clamp is lightweight and quick release, eliminating the need for a tedious process. Convenient design, simple installation. 2CNC CUTTING: Bicycle seat post clamp adopts CNC cutting, grinding and polishing, the surface is flat and burr free, good hand feeling. 3LIGHTWEIGHT: Bike seat post clamp adopts a large area of hollow, light weight does not add weight. Exquisite craftsmanship, beautiful appearance. 4ALUMINUM ALLOY: Bike seat pipe clamp is made of high strength aluminum alloy, durable, rust proof, corrosion resistant, long service life. 5ERGONOMIC DESIGN: Aluminum alloy bicycle seatpost clamp is ergonomically designed, more efficient and more comfortable.