... motorcycle sproket type:420,425,428,520,530 material:C45#;stainless steel;A3 Specifications:1)Durable in use2)Deliver in time3) ... America and so on5.ten years of history and experienced in production Specifications: Model No.:TITAN99. TITIAN2000,CG125,XLR, ... 16MnSurface-finishingSandblasting, Dull polish, Galvanized, with the circle line in the surface or according to your requirement.Heat treatment: ...