we are China leading manufacturer of steel pulleys which are made from a single piece of steel, no balance holes are required, unlike a cast pulley where they must be balanced and drilled. All of them are lighter in weight and stronger than cast iron. They are also stronger than stamped pulleys Pulleys are mainly avaliable for auto parts, agriculture machine, graden machinery, mining and engineering machinery etc, they are mainly exported to America, Europe, etc. We are looking forward to you cooperation.