WEAR AND : All metal is 2 3 times more to wear than resin, and the brake pads are more to fading under heavier brake loads.The resin semi metal brake pad has good initial bite, the brake disc is less worn, and the brakes feel comfortable. EXQUISITE WORKMANSHIP: The brake pad has fine appearance, good effect, quiet and noiseless, wear , safe, stable, comfortable and convenient. PREMIUM MATERIAL: Copper base all metal to make the performance stable, for your riding escort, bring you different riding fun, suitable for daily cycling, fitness. EASY TO USE: Short running in period, good power modulation performance and long service life.Replace the brake pads with low wear and comfortable brake feeling, very practical brake pad accessories. APPLY TO: The brake pad is suitable for mountain bike, electric bike, substitute driving, scooter. Fast road leveling, high speed break can also achieve stable effect, reduce the wear rate of products. Colour: black Material: semi-metallic Size: 32.2x29.8mm Package Contents: 5 Pair * Brake pads 5 * Spring 5 * Latch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.