Steelfast is a kneadable,steel-reinforced, epoxy putty adhesive sealant that mixes in just one minute to provide fast repairs to items made of ferrous and aluminum metals. Molds like clay and universally used for repairing pipes, tanks, valves, pumps, engine blocks, water jackets, radiators, etc. A permanent, non shrinking metallic filler for blow holes in castings. Widely used for fast, inexpensive, but accurate drill jigs and placement fixtures. Steelfast Stick is an epoxy-based product that is extruded in a cylindrical form to include the hardener and resin for easy and assured no waste mixing. This easy to use product can be machined and used under water as well.