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: G4FAO-46/G4FA0-48/G4FA0-42 Weight:54g/70g Material:plastic Package includes:1pc bike sprocket protection