Mechanical Pulley For Motor Compressor A/3L/4L Belt Sheave AK74-7/8 7.25 OD 7/8 Inch Bore - Cast Iron V-belt Pulley 7.25 OD One is above the keyway, and the other is at a 90° position. Cast Iron One Groove Standard V Belt Pulley Size Ak54h, Ak56h Type for... Sheaves are accurately machined from fine grained cast lron Statically balanced, Surface anti rust spraying,Screws quantity:2 Dynaline 55424 Die-Cast Pulley, 5/8 in Bore, 5 in OD, 1-Groove, 3L, 4L The pulley is formed through casting, using material that meets the American standard ASTM G3000 This V-Groove Drive pulley is a general Sheave for power transmission, which is applied to compressors, motors, table saw and other power transmission devices. With a 7.25-inch outside diameter and 7/8-inch bore, this cast iron sheave is built to handle serious work. It's designed for V-belt sections A, 3L, and 4L, making it versatile for various applications This V-Groove Drive pulley is a general Sheave for power transmission, which is applied to compressors, motors, snow blowers and other power transmission devices. There is a hub, with two screw holes on it. The pulley is formed through casting, using material that meets the American standard ASTM G3000, resulting in a product that is sturdy and durable.