HL - 16 Mini Hooks Self Adhesive, Wall Hangers for Home Frames, Keys, Towels, Kitchen, Bath, Garage 16 White Plastic Hooks - Self Adhesive Sticky backing adheres to any smooth surface Glass, doors, windows, ceramic tile, stainless steel, metal, plastic surface, refrigerator, washing machine metal, etc. Simply peel off backing paper and press on firmly for 30 seconds DO NOT USE on uneven, wallpaper, sheetrock walls or porous areas ( weight limit 10 OZ )