VELCRO® 90072 General Purpose Sticky Back - 0.88" Length x 0.88" Width - For Wall, Glass, Tile, Plastic, Metal - 12 / Pack - Black Adhesive-backed squares adhere to almost any smooth surface including walls, glass, tile and plastic. Use on walls, glass, tile, plastic or metal. Sticky Back Squares work with other fasteners or adheres to themselves. Simply peel and stick.