This each seamless hooks can rotate 180 widely applied in bathroom, kitchen, living room, bedroom, closet, office and other places where you need to use. It can be used as ceiling hook, coat hook, suncatchers hook, bird feeder hook, key hook, plant hook, picture hook, towel hook, shower hook. It is made of advanced stainless steel + PVC material, no trace, no residue, waterproof and oilproof. They hold strongly on a variety of smooth indoor surfaces including painted walls, smooth ceilings, finished wood, glass, tile, and metal. Not recommended to place on or near window.