HEAT TREATED LIFTING PULLEY: The single wheel pulley is made of high-strength steel and is heat treated. For indoor and outdoor rope or rope applications, the high-capacity flexible pulley is suitable for a wide range of applications THICKENED PULLEY BLOCK]: The lifting pulley is of integrated casting process, thickened material and long service life. Delicate technology, solid design, durable and wear-resistant, strong load-bearing HIGH HARDNESS PULLEY: The wheel lifting pulley has a high load-bearing capacity and will not break easily. Durable, strong, reliable, waterproof, rust-proof, anti-high temperature, corrosion resistance SMOOTH PULLEY BLOCK: The surface of the single pulley is smooth, high strength and durable. Fixed top for easy rope handling, smooth roller provides excellent rope traversing, you can save effort and change direction WIDELY USED SINGLE PULLEY: Our single wheel pulley block is suitable for small household skis, fitness equipment, cable sliding, etc. Designed for hanging heavy objects to lighten the load