[Featured Materials] Brake pads for mountain bikes are made of semi-metallic materials, which provide strong initial bite force, enhanced waterproof performance, and reliable braking in both wet and dry conditions. These bicycle brake pads allow for convenient and timely replacement and offer extended service life. The disc brake pads are free of iron and harmful substances, feature good heat resistance, and are easy to install.[Less Noise] Semi-metallic bike brake pads deliver high-performance braking power and smooth, comfortable stops. They have excellent noise reduction properties and provide improved control. These pads minimize initial bite time, shorten the break-in period, and reduce noise on smooth roads, making them suitable for road riding.[Comfortable and Durable] Bicycle disc brake pads offer low rotor wear, a comfortable braking feel, and consistent performance. Ideal for mountain, trail, and downhill cycling.[Multiple Compatibility] Compatible with most bicycle disc brakes, including Avid Elixir E1, E3, E5, E7, E9, R, ER, CR, Mag, VIA, GT, X7, X9; SRAM XX, World Cup, XO, DB1, DB3, DB5; Shimano BS-01S, M355, M395, M446, M485, M495.Color: Black Material: Semi-metallic Size: 32.2 x 29.8mm Package Contents: 4 pairs x Brake Pads 4 x Springs 4 x Latches Note: Light shooting and different displays may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3cm.