Use on any rusty, metal surface to Instantly convert rust to a flat black, paintable surface that is protected and prevents future rust Oil based formula creates a bond with rusted surface that can be easily painted Dries tack free in 20-40 minutes, allow 24 hours before applying topcoat Unique formula transforms rusted surfaces saving time and effort sanding rust all the way down to bare metal Any-angle spray technology allows the can to be sprayed in any direction, even upside down