... /17T.etc415,420,428,428H,520.etcRaw-materialsSAE 1045, 16MN, A3 steelHeat treatmentHigh frequency quenching, carburization, MeshbeltfurnaceSurface treatmentSand blasting, galvanization, electrophoresis ... , competitive price, premium serviceOthersOEM is welcomed, furthermore, we can produce motorcycle sprocket as your design and drawing CG125 motorcyle sprocket/Factory motorcycle accessories sprocket