This V-Groove Drive Pulley is for use as a general purpose pulley for power transmission such as compressors, industrial fans, lawnmowers, snow blowers and electrical motors. It has a hub attached and the inside diameter is 5/8. This pulley comes with 1 set screw holes. Additional Features: Made of Light-Weight Diecast Works with 4L/A belts. This v-belt drive pulley is compatible with Chicago Die Cast 400A. TERRE (formerly Phoenix Distribution) is your source for genuine, affordable OEM replacement and general-purpose mechanical motion parts and outdoor power equipment. The quality of our products and our service is at the root of all we do. Let us help you find the right parts for the right application at the right time. We’re US-based with global reach. At TERRE, whether you are a retailer, manufacturer, dealer/distributor or individual consumer, you can easily find the parts you need for: small engines outdoor power equipment residential lawn mowers commercial lawn mowers snow blowers electrical motors generators air compressors agricultural equipment table saws hydraulic pumps industrial fans and more! Terre - Grounded in Quality.