It fits 4-71 thru 16-71 roots , PSI screw superchargers and can fit up to a 58 tooth in 8mm, 36 tooth in 1/2" pitch or a 34 in 13.9 or 14mm.
Bolts are included to mount the guard as well as studs and standoffs for your specific blower snout length.
Finish is show polished alum. Guard as shown in the pictures is 4.50" wide side to side.
Buyer must let RBS know blower snout length from where it mounts to the blower front cover to where the pulley bolts on and if there is a blower pulley spacer used or not.