Bondo® Extreme Metal Reinforced Filler is easy to use, yet exceptionally strong for repairing and rebuilding metal, cosmetic repairs to alloy wheels, fiberglass, and more. Reinforced with aluminum, this two-part filler mixes quickly, cures fast, and stays very strong – it won’t rust and can be drilled, anchored, or tapped for non-structural repairs. It has a metallic appearance, great for a wide range of uses.