Gray Rust-Oleum Automotive Filler Primer Spray-249279 11 oz: Provides a high build formula to fill minor imperfections on automotive surfaces. Ideal for use on interior exterior metal wood fiberglass and more. Filler Primer improves top coat adhesion and appearance for a complete and durable project. Features any angle spray technology to spray in any direction even upside down with a comfort spray tip that reduces finger fatigue caused by continuous spraying.