21MM Belt Width; 8MM Belt Pitch; 8M-21 Poly Chain GT2 Belt Style; 63 Teeth; 23.368MM Face Width; Bushed; 170.688MM Flange OD; 158.826MM OD; 160.426MM Pitch Diam; Keyway; 12.7 To 53.975MM Bushing Bore Range; 2012 Bushing; No Minimum Plain Bore

20MM Belt Width; 14MM Belt Pitch; 14MPC-20 QT PowerChain II Belt Style; 63 Teeth; 26.416MM Face Width; Bushed; 297.434MM Flange OD; 277.952MM OD; 280.746MM Pitch Diam; Keyway; 30.163 To 100.013MM Bushing Bore Range; 3525 Bushing; No Minimum Plain Bore

Synchronous Pulley; 20MM Belt Width; 14MM Belt Pitch; 14M-20 Style; 63 Teeth; 34.519MM Face Width; Bushed; 298.45MM Flange Outside Diameter; 278MM Outside Diameter; 281MM Pitch Diameter; Yes Keyway; 1-1/8 To 3-15/16" Bushing Bore Range; 3525 Bushing; No Minimum Plain Bore

125MM Belt Width; 14MM Belt Pitch; 14MPC-125 QT PowerChain II Belt Style; 63 Teeth; 134.366MM Face Width; Bushed; 297.434MM Flange OD; 277.952MM OD; 280.746MM Pitch Diam; Keyway; 49.213 To 125.413MM Bushing Bore Range; 4535 Bushing; No Minimum Plain Bore

Synchronous Pulley; 12MM Belt Width; 8 MM Belt Pitch; 8M-12 Belt Style; 63 Teeth; 0.57MM Face Width; Bushed; 6.253MM Outside Diameter; 6.316MM Pitch Diameter; Yes Keyway; 2012 Bushing; No Minimum Plain Bore