"What you will get: 4 pairs of semi-metallic bicycle brake pads for convenient and quick replacement and longer service timeMaterial: copper semi-metallic brake pad, containing more than 30% carbon fiber copper (containing 99.9% copper) to increase heat dissipation and wear resistance, break-in time, braking reaction is direct, sensitive; Fast flat road and high-speed breakthrough can also achieve stable braking effect and reduce the wear rate of the productCompatible with: M446 such as appearance can be applied in plate formQuality cycle brake pads: our products have passed strict inspection and control and are free of asbestos, iron and harmful substancesFeature: beautiful appearance, good braking effect, quiet, wear-resistant, safe, stable, comfortable and practical Compatible with disc brakes below and more:< br/> For Shimano Deore BR-M446 Note: 1. So that the part is often applied in high temperature/humidity/dust and the piston spacing is not horizontal and other harsh environments, the probability of wear is high. 2. Under normal conditions, the surface of the disc is very shiny and becomes a mirror, so as to make the disc intact. 3. There are friction marks on the disc surface, which cannot be locked in time. If the disc water brake makes a high-pitched sound, the new brake pads and disc should be replaced. 4. Any related brand we mentioned just applied to demonstrate compatibility, does not work as trademark, please note. Package includes: 4 Pairs of brake pads "