High Safety Factor: The black screw bolt, combined with the elastic safety buckle design, maximizes protection against falling objects, both indoors and outdoors. Easy Installation: Simply use a hammer, wrench, or drill to screw the heavy duty screw hook into a wooden or concrete wall. The screw design makes it easy to attach to the wall and allows for quick installation. Long Service Life: The wooden ceiling hooks are made of carbon steel with a black zinc finish for high load capacity. Waterproof, rustproof and non-slip, they can be used for a long time indoors and outdoors. Wide range of applications: The black screw hook is suitable for indoor and outdoor environments and can hang large objects such as potted plants, lanterns and bird cages, or place small objects such as cups.