industrial chain wheel Standard motorcycle chain, All types are avaible. industrial chain wheel,sprocket stainless Sprocket,platewheel, ... series.standard sprocket, idler sprocket, stainless steel sprocket,chain sprockets etcMaterial: C45, A3 steel. other material ... , ISOTreatment: forging, hobbing, blackening, quenching. CNC machine processing.steel coupling,coupling MH coupling NM coupling flexible ...