OZ, Bluestick Putty, Reusable, Removable Blue Adhesive Putty, Replaces Tape, Tacks, Staples & Magnets, No More Holes In Walls & No More Chipped, Peeled Paint, Sticks Just About Anything To Slick Or Hard Surfaces Such As Wood, Tile, Glass, Concrete, Porcelain, Metal & Painted Surfaces, Use To Fasten Decorations, Posters, Notes & Paintings, Can Be Used Time & Time Again, Non-Toxic, Conforms To ASTM D 4236.