High-Quality Material: The pulley is made of polypropylene on the outside and high-stability metal gears on the inside. The rope ends are closed with aluminum compression buckles for safety and durability. The rope part is made of nylon and has a total length of 2 m The cord automatically locks in the position you pull on it and remains locked the thumb release lever to release it. No need to worry about stretching, folding or loosening. Each pull ratchet can support a weight of approximately 20 kg. 35kg, 70kg/pair. It is recommended to use pairs of pulleys when hanging to maximum flexibility and safety. There are high-strength metal gears inside the pulley to quickly adjust and lock the rope. You simply pull the free end of the rope to adjust the hanging item to the desired height. Wide Application: Perfect for hanging grow lights, fans, flower pots, filters, etc. in your home. This 2m adjustable pulley suit your suspension requirements. Colour:Black Material:Plastic+Metal Size:Length:2m Package Contents: 4 * Heavy Duty Rope Hanger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.