High Quality Material: It is made of sturdy metal material with black coating on the surface, which is not easy to be broken and rusted. It can hold about 15 kg and is suitable for indoor and outdoor use. Safety buckle design. Each hanger with a movable buckle to prevent items from falling out due to the shake of wind and rain or other unforeseen factors. Q-shaped hooks. Easy installation on wood or wall. You can screw the hooks into the wood with a wrench or drill the hooks into the cement wall. Widely used: suitable for hanging lighter items, such as outdoor holiday lights, drip line, potted plants, birdhouses, curtains, ropes, chains, wind chimes and more. Package contains 22 pieces of 55mm Q hangers & 22 pieces of plastic screw tubes.