Feature: 1.SUITABLE FOR: This bike disc brake is light weight and high strength, compatible with mountain bike and road bike. 2.MATERIAL: This bike disc brake is made of high strength aluminum alloy material, wear-resistant and strong, provide stable performance. 3.BRAKING PERFORMANCE: This bike disc brake help you easily upgrade the old hydraulic disc brakes, better braking performance and don't need to change the gear shift kit, practical and handy. 4.ROTOR: The rotor is made of hardened aluminum alloy and high-strength steel, good heat dissipation and high quality. No matter how you use the brakes, you don't have to worry about rim damage. 5.WHAT YOU GET: One set contains 2 x Disc Brake 2 x Disc Brake Disc 16 x Screw, convenient to install and use. Specification: Item Type: Road Bike Disc Brake Material: Aluminum Alloy Disc Brake Disc Size: Approx. 140mm/5.5in Braking System: Cable Disc Brake Components: Disc Brake Uses: Mountain Bikes, Road Bikes Package List: 2 x Disc Brake 2 x Disc Brake Disc 16 x Screw