Colour Family: GREY Assembled Product Length: N/A Assembled Product Height: N/A Assembled Product Width: N/A . Unique cold compound which etches materials together for a life-long bond Unlike other adjesives J-B Kwik's secret combination of liquid steel and non-toxic chemical hardener result in a cold weld compound which fixes, fills and bonds any surface including iron, steel, aluminum, bronze, brass, copper, pewter, all woods, glass, plastic and ceramics 4 minute cure time