Safety buckle: Q-shaped safety buckle can prevent unwanted fall after hanging. Perfect for securely hanging light items such as lights, curtains, ropes, chains, cups , feeders, planters, tea towels and more. high quality: Made of heavy duty 4mm diameter steel and rustproof coating for years of use, tested to withstand weights up to 40 lbs. The total hook is 55mm and the yarn itself is 20mm; the end of the screw has a diameter of 4 mm. Easy installation: Screw-in hooks for easy installation and long life You can tap directly into the wood with a hammer or screw into the wood with a wrench. Wide application: A good assortment of Screw Hooks for home, office, workplace and indoor and outdoor bars can hang cups, cup keys and other appliances. Note: this item contains functional sharp points, please put it away from children and babies. 12 Pack Screw Hooks, Ceiling Screw Hook with Safety Buckle. Hooks Screw-on High performance steel with stainless coating. Simple and practical design, and easy to use. Brand new and high quality. Stable structure, High reliability. Set of 12 Screw Hooks Specification: Quantity: 12 pieces Colour: Black. Material: Metal. Pack of 12 Screw Hooks Safety buckle design, prevent items from falling even in the windy season. Very suitable Screw Hooks for hanging lightweight items like outdoor light fixtures, drip pipes, plants, feeders, curtains, ropes, chains, cups, feeders, flower pots, etc. Package Contents: 12x Screw-on Hooks 12 x plastic pipe.