Made of abrasion-resistant rubber and aluminum alloy, these brake pads are durable and suitable for all weather The unique sand guide groove can effectively prevent the damage of sand and gravel to the rim The slightly curved design doesnt hurt the wheels and provides better stopping power with less noise. Bicycle brake pads are made of rubber, free of emery and asbestos, and harmless. And also makes less noise than other pads. As you can see, these pads are shaped with some grooves, this is to better channel the mud and water. Even in bad weather and road conditions, your bike still has excellent braking ability. As an excellent brake pad, it should be wear-resistant, heat-resistant, durable, and most importantly, not damage the rim. These are the functions you will achieve with our pads. Spec Compatibility: V-Brake Road Bike/Mountain Bike Quantity shipped: 3 pairs Product color: blue Product size: about 70*37*15mm