This rust-proof compound works great on all types of metals. It is versatile as it seals, fills, and bond your materials. Use for repairing worn, rusted, or corroded metal. Use to build-up worn surfaces. Resistant to oil, water, gasoline, and most chemicals. It can also be drilled, sanded, or painted. Cures to a gray finish. Includes a three ounce tube (about 85 grams).