Rust Converter ULTRA, Highly Effective Professional Grade Rust Repair (1 Gallon) CONVERT RUST: Convert rust to an inert coating that seals out moisture to prevent further corrosion SAFE TIME & MONEY: Eliminates the need for sandblasting, grinding or scraping EFFICIENT: 1 Gallon Covers 500 square of smooth, nonporous surface  Thats an entire Dumpster! ULTIMATE PROTECTION: Convert toughest rust and corrosion caused by all types of weather conditions MULTI-USE: Use for automobiles, machinery, railings, structures, tools, marine applications and more