... pulley,timing belt, pulley, belt pulley,timing belt pulley, synchronous pulley, synchronized pulley, steel pulley, sheave, v-belt pulley, double-sided timing belts,oem pulley, ... supplied specification, hole, key way and width.Outside diameter of pulleys and size should be as form's ... of pulley mainly composed of carbon steel, if possible aluminum alloy nylon can also be employed; if external diameter ...