Ideal for hanging light weight items in place of traditional tapes, push pins, and fasteners. Gorilla Mounting Putty squares are non-toxic, repositionable, and long lasting. Great for use indoors and temporary outdoor use. Use on paper, painted walls, wood, tile, metal, posters, plastic, glass, and more!. An alternative to traditional tapes, push pins, and fasteners for hanging light weight items. Removable & repositionable with low residue. Holds up to lbs.color. Non-toxic. 84 pre-cut squares per pack. Won't dry out or harden. Conforms to ASTM D-4236. Great for indoor and temporary outdoor use. For the toughest jobs on planet earth.