Features1Highstrength screws are assembled. Ensure the tightness of the assembly, no looseness, strong and longlasting stability. 2Surface adopts cathodic electrophoresis process, and it has passed the salt spray test to be bright and clean, durable and anticorrosion. 3Tightly forged aerospace aluminum alloy, strong and firm, which ensuring the stability of brake friction. 4The nitriding and rustproof external of the screw will last as long as new and will not slip. 5Easy to install and sturdy material make this product become a best choice.SpecificationItem Type: Electric Scooter Rear BrakeMaterial: Aluminum AlloyWeight:Approx. 192g / 6.8ozFront Wheel Installation Aperture: 51mm / 2in (With bottom plate)Package List1 xDisc Brake Device