Package Include: 1 pair bicycle silicone crank arm protector cover. Elasticity protective silicone material, waterproof, strong wear-resistant and removable. Protects the surface of bike that is prone to scratching, chipping, and weathering. 5 colors for you to choose: Red, Blue, Gray, Orange, and Black. Easy and convenient using. Suitable for universal use, and compatible with common aluminum alloy cranks. Specification: Material: Silicone Size: 6.8x4x1.5cm/2.68x0.597x1.5inch Package Includes: 1 Pair of Crank Arm Protect Covers(2 Pack) 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 on-line shopping!