Material: This brake adopts quality aluminum alloy material, sturdy, anti aging, and durable. Easy to Install: Road Bike Brake Caliper is easy to install, and suitable for road bikes with mechanical brakes. Quick Response: The groove on the bike brake caliper is proper to fit most road bike tires, the brake caliper will quickly respond to your brake handle, making your bike securely stop in a short time. Adjustable Brake: The adjustable height of the road bike C Shape Brake is 2.95 to 3.7 inches, and the width is 2.68 inches. Good Performance: Clear contact feeling with balanced rigidity, weight, and stopping power, providing good braking performance. Wide Application: Linear braking curve and sleek design, better handle feeling, show you with light action. Great replacement accessories for most bicycles. Specification: Material: Aluminum Alloy Size Chart: Adjustable Height: 75-94mm/2.95-3.70inch Width: 68mm/2.68inch Package Includes: 1 Piece Road Bike Brake Caliper Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping