industrial chain wheel Standard motorcycle chain, All types are avaible. industrial chain wheel,sprocket stainless Sprocket,platewheel,taper bore sprocket,standard and non-standard sprockets etcMaterial: C45, A3.... according ... , double, triple row.ANSI, ISOTreatment: forging, hobbing, blackening, quenching. CNC machine processing.steel coupling,coupling MH coupling NM coupling flexible coupling ...