170MM Belt Width; 20MM Belt Pitch; 20M-170 Synchronous Plus Belt Style; 90 Teeth; 181.102MM Face Width; Bushed; 594.995MM Flange OD; 568.655MM OD; 572.973MM Pitch Diam; Keyway; 49.213 To 139.7MM Bushing Bore Range; M Bushing; No Minimum Plain Bore