12MM Belt Width; 8MM Belt Pitch; 8M-12 Poly Chain GT2 Belt Style; 38 Teeth; 18.288MM Face Width; Bushed; 106.934MM Flange OD; 95.174MM OD; 96.774MM Pitch Diam; Keyway; 12.7 To 42.863MM Bushing Bore Range; 1610 Bushing; No Minimum Plain Bore

Synchronous Pulley; 40MM Belt Width; 14MM Belt Pitch; 14M-40 Belt Style; 38 Teeth; 54.102MM Face Width; Bushed; 182.042MM Flange OD; 166.599MM OD; 169.342MM Pitch Diameter; Yes Keyway; 28 To 60MM Bushing Bore Range; SF Bushing; No Minimum Plain Bore