Devcon Epoxy Adhesive Dfense Blok is a two-part epoxy putty stick ideal for creating permanent repairs on metal, wood, concrete and more. It cures in 1 hour to a steel-like finish that can be drilled, tapped, machined, sanded and painted. This adhesive putty stick does not shrink upon curing and allows repairs in temperatures ranging from 35°F to 150°F. Dfense Blok has high compressive and tensile strength and is resistant to chemicals and solvents. It comes in a 2 oz stick which covers approximately 17 sq. in. at 1/4" thickness.