... 2.OEM service offered 3.Export North American/European 5016 chain couplingchain coupling, coupling,plate sprocket Material ... sprocket, stainless Sprocket,platewheel,taper bore sprocket,standard and non-standard sprockets etc.Material: C45, A3.... according ... manufacturer for all kinds of sprockets, European standard series and American standard series.standard sprocket, idler sprocket, stainless steel ...