[High Quality Material]Made of high-quality stainless steel, the Single Wheel Lifting Rope Pulley Block is not only but also easy to clean. The sturdy construction gives it a good load capacity. Mute pulley, no noise, smooth and effortless, allowing it to support weights of up to 800 pounds. [Superior Groove Wheel]Each U-shaped single pulley set comes with four self-tapping screws and four yellow expansion pipes, and each pulley set has four holes, This size is suitable for flat belts with a width of 3-12 mm. It can be easily mounted on walls, wood and metal surfaces. [Mute Duplex Bearings Design]Silent duplex bearing design not only makes the pulley smoother but also greatly reduces the friction, ensuring that the cable pulley rotates quietly, smoothly and smoothly when used. [Easy to Use]Mark the holes before installing the pulley then use a 10mm drill bit to make 4 holes in the wall, insert the yellow expansion pipes into the holes and then fix the pulley with self-tapping screws.