Two hooks are connected by a braided rope and a safety pulley to form the Light hanger unit. As the rope is always locked by the pulley tied to one of the hooks, we can only release it by pressing a lever. With this setup, you may adjust the length of a rope by simply sliding along it using the pulley and the other hook, both of which are fixed at opposite ends of the rope. It's quick, easy, and useful in many situations. Works great for storing reflectors, carbon filters, and extractors. To use, just attach one set of hooks to a bar or stationary tube, and the other set to the object you wish to hold; then, using the appropriate lever, unlock the rope or block it. The manufacturer has rated this model to support up to 5 kilogrammes.