Hammerite Direct To Rust Metal Paint - Smooth Black - 750ml Durable, corrosion resistant decorative coating for ferrous and non-ferrous metals, certain plastics and wood. This is a brilliant gloss finish which will retain its sheen for years. Can be applied directly onto rusty metal No need for primer or undercoat Corrosion resistant Quick drying 8 year protection Hammerite forms a superior barrier that not only seals out moisture but gives long lasting protection both inside and outside