Easy, convenient, and inexpensive alternative to welding, soldering, and brazing. Will bond to virtually any clean, dry surface including: iron, steel, copper, aluminum, brass, bronze, pewter, porcelain, ceramic, marble, glass, concrete, fiberglass, wood, plastic and many more. Can be drilled, tapped, machined, filed, sanded and painted. Superstrong and nontoxic. Color(s): Dark Gray; Capacity (Weight): 1 oz; Packing Type: Tube.