Features1The disc brake is useful and practical. 2A necessity for cyclists, giving you a great cycling experience. 3Refitting bracket can refit normal bicycle to updated into disc brake bicycle. 4Can be converted into ordinary bicycle disc brakes bicycle. 5Made of high quality metal, the brake bracket is durable for long service life.SpecificationFeature:Useful and practical.A necessity for cyclists.Refitting bracket can refit normal bicycle to updated into disc brake bicycle.Can be converted into ordinary bicycle disc brakes bicycle.Specifications:Colour: BlackMaterial: MetalMaximum installation diameter: 22MM/8.66inch,31.8MM/12.51inch(Optional)Two-hole distance: 51MM/2.01inchThickness: 4MM/0.15inchWith model 160 disc brake padCrank Weight : Approx. 73gPackage included:1 x Brake bracketPackage List