Standard V-Belt Pulley 3L Pitch Diameter 5.66 in 3V Pitch Diameter Not Applicable 3VX Pitch Diameter Not Applicable 4L Pitch Diameter 6 in 5L Pitch Diameter Not Applicable 5V Pitch Diameter Not Applicable 5VX Pitch Diameter Not Applicable A Pitch Diameter 6 in AX Pitch Diameter 6 in B Pitch Diameter Not Applicable BX Pitch Diameter Not Applicable C Pitch Diameter Not Applicable CX Pitch Diameter Not Applicable Bore Diameter 3/4 in Bore Type Fixed Standards ISO 9001 2015