Aluminum Alloy Bike Lock Seat Clamp with Screw Nut for Mountain Road

Made of quality metal material, high strength, sturdy and . Hollow design, lightweight and compact size, easy to install and use. With screw and nut, can be fixed firmly, hard to fall off. Item type: Seat Clamp Material: TC4, aluminum alloy Optional Color: black, red, blue Optional Size: 31.8mm, 34.9mm 7075AL-T651 Nuts TC4 alloy gasketT C4 alloy 7075-T651 aluminum alloy nut, anodized coating, high hardness, the thread is not easy to screw, TC4 alloy screw, high hardness alloy material, guarantee strength. 7075-T651 aluminum, tensile strength: 524Mpa Hardness: 146HB (18.5HW) Yield strength: 455MPa Rod diameter you can infer the required seat tube clamp specifications: 1, Rod diameter: 27.2mmCelsius28.6mm,you choose 31.8mm seatpost clamp(not suitable for fixed gear); 2. Rod diameter: 30.4mmCelsius30.8mmCelsius30.9mmCelsius31.6mm.you choose 34.9mm.