Rusto-nil is a multi-prpose special spray for home, automotive, arms 7 ammunition for industrial uses. RUSTO-NIL protect against rust & corrosion. lossen rusted parts, corrects engine starting problem due to moisture or water specially in rainy season as it removes water and moisture from spark plugs and other electric and electronic parts. RUSTO-NIL frees sticky and jam mechanism of door, locks, machine, typewriter, computers etc.