Fertan Rust Converter penetrates and pulverizes rust fast, converting it into ferric tannate, a stable blackened surface, ready be painted, welded, galvanized, or chromed. Simple to apply, Fertan Rust Converter can be easily rolled, sponged, or sprayed on, in wet or dry conditions, and over coated almost immediately or left for another day. A zinc coating left behind in the process gives you a painting window of up to six months total protection from recurring rust. Non-toxic, non-flammable, and water-based, for continuous protection from rust, treat your metal surfaces to a regular hit of Fertan Rust Converter.