Check the listing for details. Eastwood Fast Etch Rust Prevention Remover 1Gallon Powerful Rust Fighting Liquid. Condition: New. Listed at 59.99 USD. Fast Etch effectively dissolves rust and leaves a protective zinc-phosphate coating...all in 1 time-saving step. Excellent metal prep for powder coating and painting Non-toxic, non-flammable and reusable 1 gallon treats 200-300 square feet of metal Just spray, brush, wipe or dip Fast-Etch onto your rusted parts and enjoy the double benefit of rust removal and a protective zinc-phosphate coating.Fast Etch effectively dissolves rust and leaves a protective zinc-phosphate coating...all in 1 time-saving step. Excellent metal prep for powder coating and painting Non-toxic, non-flammable and reusable 1 gallon treats 200-300 square feet of metal Just spray, brush, wipe or dip Fast-Etch onto your rusted parts and enjoy the double benefit of rust removal and a protective zinc-phosphate coating.