21MM Belt Width; 8MM Belt Pitch; 8M-21 Poly Chain GT2 Belt Style; 42 Teeth; 23.368MM Face Width; Bushed; 124.714MM Flange OD; 105.359MM OD; 106.959MM Pitch Diam; Keyway; 12.7 To 41.275MM Bushing Bore Range; SH Bushing; No Minimum Plain Bore

1 Groove; 4-3/4" Outside Diameter; Bushed; SH Bushing Series; A | B Belt Series; 4" Pitch Minimum; 4.4" Pitch Maximum; 1/2 To 1-11/16" Bushing Bore Range; Keyway

2 Grooves; 3.65" Outside Diameter; Bushed; SH Bushing Series; 3V Belt Series; 3.6" Pitch Minimum; 3.6" Pitch Maximum; 1/2 To 1-11/16" Bushing Bore Range; Keyway

2 Grooves; 4-3/4" Outside Diameter; Bushed; SH Bushing Series; 3V Belt Series; 4.7" Pitch Minimum; 4.7" Pitch Maximum; 1/2 To 1-11/16" Bushing Bore Range; Keyway

4 Grooves; 3" Outside Diameter; Bushed; SH Bushing Series; 3V Belt Series; 2.95" Pitch Minimum; 2.95" Pitch Maximum; 1/2 To 1-11/16" Bushing Bore Range; Keyway