1. Two-way adjustment, superior performance, replaceable pads (the product does not include pads) 2. The distance between the mounting holes is 51mm 3. Calipers: braking force on both sides, ball bearing drive system 4. Material: Metal 5. Front Disc Brake (F160-R140): If you mount this brake on the front wheel, it will fit a 160mm disc rotor, if you mount this brake on the rear wheel, it will fit a 140mm disc rotor. 6. Rear Disc Brake (F180-R160): If you install this brake on the front wheel, it fits 180mm disc rotors. If this brake is mounted on the rear wheel, it will fit 160mm disc rotors.
