1、【Strong Structure】: This device is equipped with 270° rotatable zinc alloy hooks and high-strength bolts, ensures a stable load, and is easy to operate at multiple angles. 2、【High-strength Ropes】: Adopting high-strength polyethylene ropes meticulously guided by multi-strand filaments, this device offers high strength, abrasion and corrosion resistance, and strong loading capacity, ensuring high safety and no worry about operation. 3、【Long-lasting Design】: With its rust-resistant metal bearings and rust-resistant galvanized housing, the pulley block and positioning pulley system ensures long-lasting performance, effectively resisting corrosion without breaking, wearing out, or fading, with outstanding reliability. 4、【Two Specifications Available】: Two configuration options are available, you can choose according to your needs. Verified by rigorous load tests, the 3-wheel 15-meter rope has a load capacity of 1,100 pounds, which is suitable for light-duty work; the 4-wheel 20-meter rope has a load capacity of 2,200 pounds, which meets the needs of heavier loads, and users can choose flexibly according to the actual situation. 5、【Easy and Efficient Operation】: This effort-saving pulley block design greatly improves mechanical efficiency, reduces manual pulling exertion, and makes heavy lifting easier. It is suitable for complex installation environments such as air conditioning installation.