... forging and has 27 years' manufacture experience Motorcycle sprocket chain wheel feature:1\high quality steel materials:1045(C45 steel ... 43T…...56T etc.front sprocket12T/13T/14T/15T/16T/17T Chain 420,428,428H,520,530MaterialA3# steel(SAE Q235), C45 ... ,Sandblasting, Dull polish, Painting, Electrophoresis Paint, with the CNC machine line in the surface or as your requirementPackingBlister card, Slide ...