Ace adhesive hooks are innovative solution for hanging decorations, calendars and other light weight objects securely and damage free They hold strongly and remove cleanly using stretch-release adhesive technology, and you can hang items up to 500 grams in weight They hold strongly to a variety of surfaces including solid, hollow and painted walls, as well as other materials including wood, tile, metal and glass They’re easy to apply and remove, leaving no holes, marks or sticky residue These clear hooks and strips blend in seamlessly making them suitable for any room in the house or office Rehanging them is easy, so you can move and reuse them again and again