Features 1、The disc brake is useful and practical. 2、A necessity for cyclists, giving you a great cycling experience. 3、Refitting bracket can refit normal bicycle to updated into disc brake bicycle. 4、Can be converted into ordinary bicycle disc brakes bicycle. 5、Made of high quality metal, the brake bracket is durable for long service life. Specification Feature: 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: Black Material: Metal Maximum installation diameter: 22MM/8.66inch,31.8MM/12.51inch(Optional) Two-hole distance: 51MM/2.01inch Thickness: 4MM/0.15inch With model 160 disc brake pad Crank Weight : Approx. 73g Package included: 1 x Brake bracket Package List