Material: The shell is made of polypropylene, a neatly braided nylon rope with a sturdy zinc alloy cog wheel that can be adjusted flexibly and an aluminum buckle to be fully locked and can safely support up to to 68 kg. Easy to use: 1. Fix the hook in a fixed place with a pulley. 2. Use another hook at 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 downward, you need to push the position lever built into the pulley, then pull the rope with the hook. Adjustable: Fully adjustable and locked, resistance to Extremely high tear and rust, can be used for a long time. The carabiner buckle is a practical, quick, self-locking and anti-loosening design to ensure safety. Compatible: It is compatible with reliable support and correct clearances of the system and clamping mechanisms, provided the hooks and eyebolts fit. With a metal clasp to attach the rope to one end, these new hangers make lifting 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. Heavy duty metal and rope for strength and durability. Perfectly suitable for indoor plant stands, carbon filters, LED lights, etc. Specification: Material: Polypropylene, Zinc Alloy Gear, Buckle aluminum Ratchet size: 50mm x 32mm x 16mm / 1.96in x 1.25in x 0.62in Alu buckle: 50mm x 1 .96 in Rope length: approx. 200cm Load capacity: approx. 68 kg (per pair) Scope of delivery: 2 pieces Ratchet suspension pulley with rope