[Featured Materials] Brake pads for mountain bikes are made of semi-metallic materials, which can maximize the initial bite force, enhance the waterproof effect, and provide consistent braking performance in both wet and dry conditions. These bicycle brake pads offer convenient and timely replacement with a longer service life. The disc brake pads are free of iron and harmful substances, offer good heat resistance, and are easy to install.[Less Noise] Semi-metallic bike brake pads deliver high-performance braking power and comfortable stopping with excellent noise reduction. They provide improved modulation, minimize initial bite time, shorten the break-in period, and reduce noise on smooth roads, making them ideal for smooth road riding.[Comfortable and Durable] Bicycle disc brake pads provide low rotor wear, a comfortable braking feel, and stable performance. Suitable for mountain, trail, downhill, and various cycling applications.[Multiple Matches] Compatible with most brake bicycles, including Avid Elixir E1, E3, E5, E7, E9, R, ER, CR, CR Mag, VIA GT, X7, X9; Sram XX World Cup, XO, DB1, DB3, DB5; Shimano BS-01S, M355, M395, M446, M485, M495.Colour: black Material: semi-metal Size: 32.2 x 29.8mm Package Contents: 4 Pair x brake pads 4 x Spring 4 x Latch Only the above package content is included; other products are not included. Note: Lighting during photography and different displays may cause slight color differences between the image and the actual item. Measurement allows an error of +/- 1-3cm.