Usage Tips:Square-shaped hooks with safety clasp provide reliable hanging, preventing string lights slippage and wind-induced movement.String light hooks are fitted with elastic metal buckles, which can improve the safety performance of the hook. good for both outdoor and indoor use. It is made of sturdy materials, with anti-rust coating, not easy to deform or break, and it can weigh up to 40 lbs, allowing you to securely hang outdoor items such as Christmas lights, patio decorations, and plants. These hooks for outdoor string lights are very easy to install. You can hammer it into the wood or screw it into the wood with a wing nut driver. If you want to mount to a hard wall with these ceiling cup hooks, You only need to drill a hole in the surface, insert a plastic tube, and then screw the hook into the plastic tube. ceiling hooks for hanging plants, Each ceiling hooks comes with a plastic anchor for solid surfaces like drywall, windowsills, garages, ceilings, etc. 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. Material: Metal colour: As Shown Package Contents: 30 x screw hooks 30 x expansion tubes 1 nut driver 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.