HIGH QUALITY MATERIAL - Made of high quality steel with rust proof coating.Hangs up to 40 lbs. SAFETY BUCKLE DESIGN - Windproof squirrel-proof,hanging items will not fall out. Easy Release,the clips for Christmas Lights,leave in year after year. EASY TO INSTALL - Screw in hooks, easy to install on wood, great for patio, deck, ceiling, tree, fence and more. WIDE APPLICATION - For hanging Christmas lights, wind chimes, feeders, birdhouses, lanterns, planters, ropes, chains, candle holders, path lights, and more. Hooks Dimension Product size: 2.2 x 1 inches/ 5.6 x 2.5 cm Screw length: 0.8 inches/ 2 cm Screw diameter: 0.15 inches/ 0.38 cm Open mouth: 0.47 inches/ 1.2 cm PACKAGE INCLUDED - Pack of 20 Q-hangers.Products from NIUNIU's store