50MM Belt Width; 8MM Belt Pitch; 8M-50 Synchronous Plus Belt Style; 56 Teeth; 53.975MM Face Width; Bushed; 151.13MM Flange OD; 141.224MM OD; 142.596MM Pitch Diam; Keyway; 12.7 To 66.675MM Bushing Bore Range; SK Bushing; No Minimum Plain Bore

Synchronous Pulley; 20MM Belt Width; 8 Millimeter Belt Pitch; 8M-20 Belt Style; 56 Teeth; 22.225MM Face Width; Bushed; 150.8MM Flange OD; 141.23MM OD; 142.6MM Pitch Diam; Yes Keyway; 14 To 48MM Bushing Bore Range; SDS Bushing; No Minimum Plain Bore