Description: Premium Material: Bike disc brake calipers are made of aluminum alloy material, lightweight design, smooth and wear resistantCompact Lightweight: This compact brake is designed to fit most road bikes without adding unnecessary bulk or weightDouble Piston Drive: The left and right sides drive the friction discs at the same time, the discs remain unchanged in the center, and the brakes are more stableThe Front and Rear Clamps Are Universal: only need to replace the mounting seat, clamp is compatible for 140mm/160mm discsWide Applications: Package Includes 1 mechanical disc brake caliper, a must have product for cyclists, easy to install. Specification: Material: Aluminum Alloy Size Chart: 7cmx8cmx0.8cm/2.76inchx3.15inchx0.31inch Package Includes: 1 Disc Brake Caliper Note: Please allow slightly errors due to manual measurement and different monitors.