No nails - Comes with an adhesive sticker and will never damage your wall, The transparent hook leaves no marks on the wall Strong Adhesive Sticker - Each sticker capable of bearing 20kg Size - 7cmx7cm/2.76in x 2.76in (LxW) Easy Installation - Can be installed in any smooth surface, ceramic tile, glass, frosted glass, smooth wood, marble [Make sure there is no gap under the sticker adhesive during installation, Not suitableto small ceramic tiles, at least 10x10cm] Features: The transparent hook leaves no marks on the wall, will not damage your wall and easy to install. Adapt to different types of smooth wall - ceramic tile, glass, frosted glass, smooth wood, marble Maximum loading capacity: 20kg / 44lb. Waterproof Easy to install: 1.Clean the wall until it is completely dry 2.Peel off the red sticker cover and stick on the right place. 3.Squeeze the air for adhesive stickers (Please wait 24 hours before you put anything on the hook.) Note: Make sure the wall is dry, smooth, clean and free of large bumps. When sticking, squeeze the air out of the sticker and keep away from ceramic tile crack. Disposable Adhesive Hook - Be sure not to remove or use again once installed. Package included: Adhesive sticker x 8pcs