BOLIDS Bicycle Disc Brake MTB Bike Mechanical Caliper Disc Brakes(Rear F180/R160)

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.