Standard V-Belt Pulley 3L Pitch Diameter Not Applicable 3V Pitch Diameter Not Applicable 3VX Pitch Diameter Not Applicable 4L Pitch Diameter 3 in 5L Pitch Diameter 3.4 in 5V Pitch Diameter Not Applicable 5VX Pitch Diameter Not Applicable A Pitch Diameter 3 in AX Pitch Diameter 3 in B Pitch Diameter 3.4 in BX Pitch Diameter 3.4 in C Pitch Diameter Not Applicable CX Pitch Diameter Not Applicable Bore Diameter 7/8 in Bore Type Fixed Standards ISO 9001 2015