Features: Make of aluminum alloy, and is stable and light weight, making it a practical addition to your cycling gear. This Bike Chain Wheel Protective Cover help to prevent your trouser leg from getting caught in the chain wheel gears during cycling, thus avoiding tears and oil stain. The bicycles Crankset Chain Wheel Cover Protections is designs to prevent the chain from jumping out, protecting your bike's crankset group and enhancing its aesthetic. Suitable for 40-42T/36-38T/32-34T chain wheel with a hole spacing of 7.4cm/2.91inch, making it applicable for 4 hole crankset groups. With its functional design and strong construction, our bicycles Chain Wheel Cover Protector ensures long terms protections. Specifications: Component: aluminum alloy Type: 40-42T/36-38T/32-34T Color: Red/Blue/Black/Silver/Gold Size: As Shown in the Picture Package Includes: 1pc Bike Chainring Guard note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.