4.5" Single Groove Pulley fits B Section V-Belt 5L with 5/8" Sheave Bushing BK47H Single Phase The unloader equipped on this

The unloader equipped on this switch is used to unload the air pressure off the head of the compressor when the compressor shuts off

• Top quality made in the U

• Construction: Solid Brass

The bushing itself is made of solid steel and is precision machined to ensure high quality and secure attachment to your motor/engine shaft

4.5" Single Groove Pulley fits B Section V-Belt 5L with 5/8" Sheave Bushing BK47H Single Phase The unloader equipped on thisCast Iron 4. 5" Single Groove Belt B Section 5L Pulley w 5 8" Sheave Bushing Masterdrive single groove 4. 5" cast iron pulley sheave with 5 8" H bushing for B section belt 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 bushing inserts into the center of the pulley and slides over the shaft, as you tighten down the bolts on the H bushing it will tighten down on the shaft.