Full Specifications : - Color: Black. - Material: Aluminum alloy. - Size: 7 x 8 x 5.7 cm/2.8 x 3.1 x 2.2 inch. - Brake pad length: 45mm. - Size range: 70-90mm. - Front brake screw length 48mm, with two 4.3mm height washers. - Rear brake screw is 32mm long, with two 4.3mm height washers. - Quick-release gear to open the caliper for easy wheel removal and installation, the brake handle can be adjusted at any time. - Clear contact feeling with balanced rigidity, weight and stopping power, provide good braking performance. - Linear braking curve and sleek design, better handle feeling, show you with light action. - This brake adopts quality materials, sturdy, anti-aging and durable - Easy to install, suitable for road bikes with mechanical brake. - 2pcs per set, one for front wheel, one for the rear.