Synchronous Pulley; 170MM Belt Width; 20 Millimeter Belt Pitch; 20M-170 Belt Style; 72 Teeth; 181.102MM Face Width; Bushed; 480.009MM Flange OD; 454.05MM OD; 458.368MM Pitch Diam; Yes Keyway; 80 To 125MM Bushing Bore Range; M Bushing; No Minimum Plain Bore