Features: Elevates your materials handling efficiency with our pulley block, crafted from robusts carbon steel Q235B for heavy duty performances and a substantial 330lb safe working load. Each pulley features a plating surfaces for corrosion resistance, a smooth single bearing design ensuring quiet operations, and a detachable structure for easy installation and maintenance. For DIYer enthusiasts, warehouse operators, and constructions professional lookings for a dependable pulley systems to streamlines their lifting and moving tasks. These pulleys are perfect for riggings systems, loading platforms, and various material handling setups in both industrial and residential environment. With a compacts wheel diameter of 1⅜ inches and fitting rope up to Ф6mm, this pulley set merges functionality and convenience, enhancing any project that requires precise motion control. Specifications: Component:Carbon Steel Q235B Quantity:2pcs/4pcs Product Size: Approx.68x40x45mm/2.67x1.57x1.77inch Thickness:Approx. 3.3mm/0.12inch Net Weight: 189g(6.6oz) Package Includes: 1 Set Pulley Rollers note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.