3.5" Single Groove A Section 4L Sheave with 1/2" (0.500") Keyed Bore - AK34-1/2 1-1/2" NPT This gauge also has a

This gauge also has a blue pressure relief vent that needs to be pulled up before use

This is an elbow fitting that has on one side 3/8" male NPT threads and on the other side is a push lock fitting to adapt to 1/2" outside diameter

also known as 4L series belts

corrosion-resistant brass

it is not recommended to be adjusted more than about 15 PSI in either direction

3.5" Single Groove A Section 4L Sheave with 1/2" (0.500") Keyed Bore - AK34-1/2 1-1/2" NPT This gauge also has aCast Iron 3. 5" Single Groove V Style Section A Belt 4L 1 2" Shaft Pulley Masterdrive single groove 3. 5" pulley for A section 4L belts. This is a high quality cast iron pulley. This pulley is designed to fit a 1 2" keyed shaft and features dual set screws to ensure a completely secure fitting. Most pulleys that are similar to this only have one set screw, making them less reliable in many working conditions. This pulley is designed to be used with A