Feature:1. Non Slip Lining: Equipped with non slip lining, that the post clamp can stay in its position firmly, not easy to move to anywhere else, providing a satisfying experience.2. Fine Workmanship: Adopted anodic oxidation treatment for bicycle post clamp, so that the surface color does not easy to fade, also has excellent corrosion resistance, suitable for long term use.3. Convex Ring Design: Convex ring anti slip design is easy to distinguish the up and down sides, convenient then to use, able to save your wasting time about choosing right direction.4. Application Scope: 31.8mm seatpost clamp is suitable for 27.2mm/28.6mm(1.07in/1.13in) saddle seat. Please check size and model carefully before placing order to avoid inconvenience.5. Aluminum Material: Made of high quality aluminum material with high strength, wear resistant, able to support a long service life, also has a light weight, will not increase the burden or cause additional fatigue.Specification:Item Type: Seat Post ClampMaterial: Aluminum AlloyApplication: For Road Bicycle, Mountain BikeProduct Size: Inner Diameter: Approx.31.8mm/1.25inWeight: Approx.14g/0.5oz.Package List:1 x Seat Post Clamp