About this item: Safety Buckle Design: Add a safety buckle design to prevent hanging objects from falling, even in high wind. Compared with ordinary ceiling hooks, the eye hooks screw are weatherproof and wind-resistant, perfect for hanging outdoor string lights. No worry about items be ing knocked off, more secure. Sturdy & Strong: made of quality metal with black rustproof coating, suitable for indoor and outdoor use. Q hanger screw hooks are heavy duty and durable can hold a good amount of weight up to 10kg and can last many years. Easy to Install & Use: String light hooks are easy to install. You can screw the hooks into the wood by hand or with a wrench, or use an electric drill to drill a hole in the concrete wall, plug the expansion tube into it, and finally use a wrench to screw the hook in. Great for wood, patio, roof, deck, ceiling, porch, balcony, tree, fence, and more. Widely Used: Outdoor hanging hooks are windproof, strong, and permanent. You can use them literally anywhere! Perfect for outdoor string lights, patio lights, Christmas lights, plants, fairy lights, bird feeders and houses, flower pots, wind chimes, icicle lights, deck lights, mugs, and decorations. Use scene: bonsai potted plant flower hanging hook hook, decorative lamp lamp hook, daily home and so on~ Material: Metal colour: black Package Contents: 25 x Hook with expansion tube Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.