The heavy duty steel is designed to be more durable. Additional Features: Made of Steel Works with 4L/A|5L/B belts This AB1200 pulley is built tough with ASTM 1020 carbon steel that's precision-machined using CNC for perfect fit every time. The 12-inch outside diameter with single groove handles A, B, 5L, 4L, AX, and BX belts without any issues The pulley is formed through Welding Forming, using material that meets the American standard ASTM 1020, resulting in a product that is sturdy and durable. This V-Groove Drive pulley is a general Sheave for power transmission, which is applied to compressors,motors, lawn mower,snow blowers and other power transmission devices. Chicago Die Cast 1100A6 Single V-Groove Pulley 11 X 5/8 Bore and This AB1200-5/8 single groove sheave is exactly what you need! Made from sturdy ASTM 1020 steel that's built to handle serious work, this pulley features a 12-inch outside diameter with a 5/8 inch bore that fits standard shafts perfectly Sheave is precision-processed through CNC to achieve high accuracy in all dimensions. There is a hub, with two screw holes on it. Pulley outside diameter:12 inch,1 Groove 5/8 Inch Bore Pulley AB1200-5/8 Single Groove Web Sheaves,12" OD 5/8 Inch Bore V V Belt Pulley Standard V-Belt Pulley: For V-Belt Section A,B,5L,4L,AX,BX
