Features: 1.Bicycle disc brake brackets are made of high-quality aluminum alloy materials. It is anti-rust, corrosion resistance, sturdy durability, not easy to deform, and long service life. 2.The appearance of the adapter is exquisite, exquisite and smooth, and classic black and white color, which can perfectly decorate your bicycle. 3.The disc brake converting seat has a variety of specifications, which can be selected according to the size of the disc brake to meet the multiple needs of users. 4.This rotor adapter is very convenient to install and disassemble. You can perfectly match your bicycle without using other tools for additional modification. 5.Bicycle disc brake adapter is suitable for most mountain bicycles and MTB highways bicycles. Specifications: Material: Aluminium Alloy Color: Black and white Optional Type: DS01(Front & Rear Wheel: PM to PM, 180mm rotor) DS02(Front Wheel: IS to PM, 203mm Rear Wheel: IS to PM, 180mm) DS05(Front Wheel: IS to PM, 160mm Rear Wheel: IS to PM, 140mm) DS06(Front Wheel: IS to PM, 180mm Rear Wheel: IS to PM, 160mm) Weight: Approx.24-38g/0.8-1.3oz Package List: 1 * Bike Disc Brake Bracket