J-B Weld SteelStik is a hand-mixable, steel-reinforced, non-rusting epoxy putty designed for quick and permanent repairs on metal components. Ideal for industrial-strength applications, it can be molded into shapes, or used to build up, patch, and rebuild steel components. SteelStik sets in 5 minutes and is fully curable in an hour. Once cured, it can be tapped, drilled, sanded, and painted. It cures to a dark grey color, has a tensile strength of 4000 PSI, and withstands temperatures up to 350 degrees F.