Description: Non-marking non-destructive wall surface, similar to a variety of non-marking hooks, assisting in the installation of wall coverings. Transparent design makes your home beautiful and clean. No drilling needed. Our self-adhesive nails will firmly stick on wall. They're great for mounting shelves, wall organizers, and kitchen racks. Wipe up and drywall, and peel off the cover, then press the hook on a smooth surface for minutes. Works on a variety of surfaces, like wood, tile, ceramic, metal surface, and more, BUT DON'T USE ON PAINTED & PAPER WALL. Specification: Material: Plastic Size: 5X8cm Color: Transparent Package Includes: 10 Pieces Self Adhesive Wall Nail(4 Pack) Note: Conversion: 1inch=2.54cm, 1cm=0.393inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!