Heavy Duty Iron Screw in Hooks: premium carbon steel with anti-rust black coating holds up to 40 pounds for years of indoor and outdoor hanging Safety Buckle Design: built-in safety buckle locks items in place preventing falls from wind or movement for secure hanging of lights and plants Easy To Install: you can screw the hooks into the wood with a wrench, To install the hook on the wall, you need to drill a hole in the wall, put a plastic tube, and then twist the hook into the plastic tube. Widely Used: this Safety light hanger hook is perfect for daily use of securely hanging lightweight items such as outdoor holiday Lights, drip lines, potted plants, birdhouses, curtains, ropes, cords, chains, mugs, pots, wind chimes, light fixtures, chandelier and more. Q-Hanger Hook: our package includes 30 pcs Q-hanger and 30 pcs plastic expansion tubes, deep enough to hang things safely. Suitable for all solid surfaces such as walls, ceiling, outdoor eaves.