AK20-3/4" OD 2" Cast Iron ID 3/4" Shaft Pulley Sheave 1 Groove V Style A Belt 4L NewAK20 3 4" OD 2" Cast Iron ID 3 4" Shaft Pulley Sheave Single Groove V Style A Belt 4L New AK2034 AK20 3 4" Bore Cast Iron Pulley Keyway for V belt size 3L, 4L, A B OD 2" ID 3 4" Outside diameter: 2" inch Length through bore: 1. 1563" inch Bore: 3 4" inch Belt section size: 3L, 4L ,5L Material : Cast Iron One pulley 2 Hex set screw 90 Keyway 3 16 X 3 32