ITEM NAME:1pair Practical Bicycle Caliper Brake With Pads Front Rear Aluminium Alloy Features: Dual pivot design, caliper brake, side pull for easy operation and usage. 1 set include front and rear brake, two brakes are included to meet your needs. The distance between the brake mounting hole center and the rim should be within 37-47mm. Made of aluminium alloy material, durable enough to use and not easy to break. Suitable for most of racing bicycles and road bicycles, universal design. Specifications: Material: Aluminium Alloy Color: Black Size(Approx.): Front clamp, Rear clamp Front clamp screw length: 31mm diameter: 6mm nut length: 21mm diameter: 8mm Rear clamp screw length: 13mm diameter: 6mm nut length: 8mm diameter: 8mm Clamp stroke: About 37-47 mm Components: Caliper Brake Braking System: V Brake (Friction Wheel Brake) Use: Road Bicycles Package Included: 1 pair Bicycle Caliper Brakes Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement..Made of aluminium alloy material, durable enough to use and not easy to break. Material: Aluminium Alloy. 1 pair Bicycle Caliper Brakes. Dual pivot design, caliper brake, side pull for easy operation and usage.