Product details: Safe working load : 77 lb (35KG). High-Quality Material: The high-quality lifting pulley is made of 304 stainless steel, which features a smooth surface, lightweight, robustness, corrosion resistance, and durability. Whether used for industrial lifting, transportation, suspension work, or daily applications such as clotheslines, tents, and fishing boats, it is the best choice. Excellent Design: The 304 stainless steel pulley, featuring a bearing structure and a 360-degree rotation design, allows ropes, cables, belts, or chains to run smoothly in its groove. It not only changes the direction of force but also provides power for rotational motion, enabling mechanical advantage in linear or rotational systems. Lifting heavy objects becomes an effortless task, suitable for a variety of different applications. Instructions for use: This 304 stainless steel pulley is designed specifically for the traction of ropes and features a 360-degree rotation function. By rotating the pulley, not only can the direction of force be changed, but it also effectively prevents rope entanglement, ensuring smooth operation. Additionally, the pulley assembly can adjust the required force as needed, making it easier to lift or move heavy objects. Colour:As Shown Material:Stainless steel Package Contents: 4 x M15 pulley blocks