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.... ... sprockets, European standard series and American standard series.standard sprocket, idler sprocket, stainless steel sprocket,chain sprockets etcMaterial: C45, A3 steel. other material ...