Variable Pitch V-Belt Pulley Bore Diameter 3/4 in Standards REACH Certification RoHS Compliant For Belt Trade Size 4L 5L A AX B BX For V-Belt Type Classical Cogged Material Cast Iron Maximum Pitch Diameter 5.2 in (4L A) 5.5 in (5L B) Number of Grooves 1 Outside Diameter 6 in Set Screw Location Not Applicable 3L Pitch Diameter (Maximum) Not Applicable 3L Pitch Diameter (Minimum) Not Applicable 3V Pitch Diameter (Maximum) Not Applicable