... 2.OEM service offered 3.Export North American/European 5016 chain couplingchain coupling, coupling,plate sprocket Material: C45, A3 ... coupling,sprocket (35B 18T)KANA standard sprocket,plate wheel, chain sprocket, taper bore sprocket, standard sprocket, idler sprocket, ... non-standard sprockets etc.Material: C45, A3.... according to ISO, DIN,ANSI,JIS,BS,KANA,SATI standardchain sprocket, taper ...