Material: The shell is made of polypropylene, a carefully braided nylon rope with a sturdy zinc alloy gear wheel that can be flexibly adjusted and an aluminum buckle to be completely locked and can safely hold up to 68 kg.< /p> Easy to use: 1. Fix the hook in a fixed place with a pulley. 2. Use another hook on the other end of the rope to hang your product. Pull the rope without a hook to adjust the product upwards. If you need to adjust the product down, you need to push the position lever built into the pulley, then pull the rope with the hook. Adjustable: Fully adjustable and locked, extremely high tear and rust resistance, can be used for a long time. The carabiner buckle is a convenient, quick, self-locking and anti-loosening design to ensure safety. Compatible: It is compatible with reliable support and correct clearances of the clamping system and mechanisms, provided that the hooks and eyebolts fit. With a metal clasp to attach the rope to one end, these new hangers make raising and lowering lights and other things easy and smooth. Discover your hanging tent, fan and more. Wide range of applications: for hanging LED grow lights, aquarium lights, fans, ventilation systems, filters, reflectors, flower pots, miner's lamps, etc. Welcometomeet