Those bike brake pads are made of sturdy wearable rubber and aluminum alloy, which can reduce noise effectively and provide good braking power in any conditions. They do not hurt the wheel, and are able to provide braking ability, effectively prevent diversion sand damage to wheel when braking. Suitable for most of road bike, mountain bike. Each pair have left and right pads. Feature - Color: Blue - Material: aluminium alloy+rubber - Size: 5.5 x 3 x 2cm - Made of hard-wearing rubber and aluminum alloy, our pads are durable and for all weather - Our Pads do not hurt the wheel, and are able to provide braking ability, effectively prevent diversion sand damage to wheel when braking - Great stopping power, less noise. - The grooves effectively prevent sand/stone damages to the wheel rims - Suitable for most of road bike, mountain bike. Each pair have left and right pads. Package list: 1 pair x bike brake pads