4.5" Double Groove A Section 4L Sheave with 5/8" (0.625") H-Style Split Taper Bushing - 2AK46H 6.5" This gauge reads every 100

This gauge reads every 100 PSI with tick marks every 50 PSI

reducing the pulley size by 1/4" to 1/2" on average

There is a built in muffler in the exhaust air port to quite down the unloaded air that is released once the compressor reaches 125 PSI

to control the throttle on a gas engine and/or unloader valves on some pumps

4.5" Double Groove A Section 4L Sheave with 5/8" (0.625") H-Style Split Taper Bushing - 2AK46H 6.5" This gauge reads every 100Cast Iron 4. 5" 2 Groove Dual Belt A Section 4L Pulley With 5 8" Sheave Bushing Masterdrive 2 Piece dual groove 4. 5" cast iron pulley sheave with 5 8" H bushing for A section belts. This is a high quality 2 piece pulley that measures 4. 5" outside diameter and is designed to be used with an H style bushing. This 5 8" bushing (Included) inserts into the center of the pulley and slides over the shaft. As you tighten down the bolts on the H bushing it