Synchronous Pulley; 50MM Belt Width; 8 Millimeter Belt Pitch; 8M-50 Belt Style; 64 Teeth; 53.975MM Face Width; Bushed; 171.45MM Flange OD; 161.6MM OD; 162.97MM Pitch Diam; Yes Keyway; 14 To 60MM Bushing Bore Range; SK Bushing; No Minimum Plain Bore