High Quality Steel Screw Hook High quality metal with safety ring design, durable screw hook, not easy to break and rust. Easy to install? You just need to use a hammer, wrench or drill to hang the screw in a wooden or concrete wall. You only need to install the expansion pipe first, it can be easily installed with the screw hook. Beautiful design? Screw bolt length 5.2cm, stainless steel hook width 2cm, safety ring design to prevent hanging objects from falling, improve safety performance of the black hook, tested up to 40 kg. Wide range of applications? Ceiling hooks ideal for indoor and outdoor use. It can be used to hang large objects such as pots, lanterns, birdcages or to place small objects such as cups. What is included? You will receive 30 hook screws and 30 expansion tubes, enough quantity to meet your daily hanging needs.