AK20-1/2" OD 2" Cast Iron ID 1/2" Shaft Pulley Sheave 1 Groove V Style A Belt 4L NewAK20 1 2" OD 2" Cast Iron ID 1 2" Shaft Pulley Sheave Single Groove V Style A Belt 4L New AK2012 AK20 1 2" Bore Cast Iron Pulley Keyway for V belt size 3L, 4L, A B OD 2" ID 1 2" Outside diameter: 2" inch Length through bore: 1. 1563" inch Bore: 1 2" inch Belt section size: 3L, 4L Material : Cast Iron Quantity : One pulley 2 Hex set screw 90 Keyway : None