Repair metal gr.57 It is used to repair, rebuild, shutter, seal, plaster metal, iron, aluminum, copper, brass, cast iron bronze, lead and hard plastics. Repair pipes, valves, tanks, engine parts, metal tools, air ducts, bike parts, motorcycles and cars. Ready to go. Strong, easy, quick. Applicable even in the presence of water leakage. It also adheres su wet surfaces. It does not withdraw during hardening. After hardening, it can be drilled, sanded, processed, painted.