Material: 45# steel, smooth surface, strong and safe, high strength, high load capacity, high efficiency, long service life Dimensions: pulley diameter 2.48 inches, maximum diameter of the applicable rope 0.4 inchs, hook opening diameter 0.94 inchs, pulley can support 1 Ton 4 pulleys design: 4 pulleys design, easy to operate and reduce the load when lifting, carrying or hanging heavy objects, each pulley has built-in bearings, smooth working and low noise Product Performance: 360 degrees rotation unhooking lock, prevent rope knotting, easy to operate, sturdy structure; pulley is widely used in industrial lifting, pulley block, factories, construction, cargo transport, wire rope hoists and other fields Package: 2Pcs 1 Ton 4 pulleys, 65ft/20m, 0.39in/10mm nylon rope 1T-4lun Pulley Block