36MM Belt Width; 8MM Belt Pitch; 8M-36 Poly Chain GT2 Belt Style; 38 Teeth; 40.132MM Face Width; Rough Bore; 106.934MM Flange OD; 95.174MM OD; 96.774MM Pitch Diam; No Keyway; No Bushing; Minimum Plain Bore; 2.438" Max Bore

21MM Belt Width; 8MM Belt Pitch; 8M-21 Poly Chain GT2 Belt Style; 38 Teeth; 23.368MM 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