Description: 1.Chainwheel cover can prevent the ride in the process of the trousers is not easy to be transferred into the tooth plate gear, anti-break anti-oil effect. 2.Product size style is complete, mostly for mountain bike,folding bike, materials are plastic. Type:bike sprocket protection Color:black Size:seen in the picture Model:G4RB48-B/G4RB42-1/G4RB44 Weight:52g/45g/38g Material:plastic Package includes:1pc bike sprocket protection