2 Grooves; 8-1/4" Outside Diameter; Bushed; H Bushing Series; 3L | 4L | A Belt Series; 7.66" Pitch Minimum; 8" Pitch Maximum; 3/8 To 1-1/2" Bushing Bore Range; Keyway

7/8" Bore; 2 Grooves; 3.95" Outside Diameter; Finished Bore; No Bushing; 3L|4L|A|5L|B Belt Series; 2-1/2" Pitch Dia Min; 3.9" Pitch Dia Max; Keyway; Manual Turn Adjustment Method