Standard V-Belt Pulley 3L Pitch Diameter 2.66 in 3V Pitch Diameter Not Applicable 3VX Pitch Diameter Not Applicable 4L Pitch Diameter 3 in 5L Pitch Diameter Not Applicable 5V Pitch Diameter Not Applicable 5VX Pitch Diameter Not Applicable A Pitch Diameter 3 in AX Pitch Diameter 3 in B Pitch Diameter Not Applicable BX Pitch Diameter Not Applicable C Pitch Diameter Not Applicable CX Pitch Diameter Not Applicable Bore Diameter 5/8 in Bore Type Fixed Standards ISO 9001 2015