Features1Average Force: The central lock can produce average force, which not only extends the service life of the brake rotor, but also reduces the possibility of brake rotor loss and deformation. 2Good Braking Performance: The disc brake rotor is made of steel, and the disc and structure are considered to improve the performance and safety of the disc. 3Wear Proof and Non Deformation: The bicycle brake disc is made of qualified steel , which is corrosion proof, non deformable and durable. 4Reduce Heat Transfer: While reducing heat transfer, it has a certain degree of flexibility, on the other hand, it solves the problem of internal tension. 5Easy installation: It is easy to install on the finished brake disc frame and front fork. Disc brake rotor provides equipment for the riding.SpecificationItem Type: Disc Brake RotorMaterial: Steel Center Lock Cover Inside Diameter: 26.8mm/1.06inCenter Lock Cover Outer Diameter: 44mm/1.73inPackage List1 x DiscBrakeRotor1 x Center Lock Cover