Synchronous Pulley; 20MM Belt Width; 8MM Belt Pitch; 8M-20 Belt Style; 24 Teeth; 28.575MM Face Width; Bushed; 70.002MM Flange OD; 59.741MM OD; 61.112MM Pitch Diameter; Yes Keyway; 19 To 22MM Bushing Bore Range; JA Bushing; No Minimum Plain Bore