Synchronous Pulley; 1" Belt Width; 1/2" Belt Pitch; H Belt Style; 14 Teeth; 1.312" Face Width; Bushed; 2.461" Flange OD; 2.174" OD; 2.228" Pitch Diam; Yes Keyway; 1/2 To 1" Bushing Bore Range; 1108 Bushing; No Minimum Plain Bore

21MM Belt Width; 8MM Belt Pitch; 8M-21 Poly Chain GT2 Belt Style; 28 Teeth; 23.368MM Face Width; Bushed; 81.534MM Flange OD; 69.698MM OD; 71.298MM Pitch Diam; Keyway; 12.7 To 28.575MM Bushing Bore Range; 1108 Bushing; No Minimum Plain Bore