Synchronous Pulley; 20MM Belt Width; 8 Millimeter Belt Pitch; 8M-20 Belt Style; 30 Teeth; 22.225MM Face Width; Bushed; 84.938MM Flange OD; 75.04MM OD; 76.394MM Pitch Diam; Yes Keyway; 10 To 38MM Bushing Bore Range; H Bushing; No Minimum Plain Bore

21MM Belt Width; 8MM Belt Pitch; 8M-21 Poly Chain GT2 Belt Style; 30 Teeth; 23.368MM Face Width; Bushed; 86.614MM Flange OD; 74.803MM OD; 76.403MM Pitch Diam; Keyway; 12.7 To 28.575MM Bushing Bore Range; 1108 Bushing; No Minimum Plain Bore

30MM Belt Width; 8MM Belt Pitch; 8M-30 Synchronous Plus Belt Style; 30 Teeth; 31.75MM Face Width; Bushed; 85.09MM Flange OD; 75.133MM OD; 76.403MM Pitch Diam; Keyway; 12.7 To 38.1MM Bushing Bore Range; QT Bushing; No Minimum Plain Bore