Tombow Xtreme Mounting Putty can be used for indoor and outdoor projects. It works with metal, masonry, brick, wood, glass, ceramic, rubber, fiberglass composite, china, and stone. This high-performance re-usable adhesive tack holds up to 13 lbs. per pack! The pre-cut tabs are easy to remove and easy to knead. Tombow Xtreme Mounting Putty is fast curing, reusable and paintable. 84 pre-cut pieces per pack.