Dupli-Color Filler Primer is designed to provide a smooth, rust-resistant basecoat that improves the adhesion and appearance of the topcoat. The fast-drying sandable formula features outstanding high-build and feather edging. Dupli-Color Filler Primer is ideal for use on most metal, wood, and fiberglass materials. The primer is available in standard gray, red, or black to suit your specific painting needs. Want a good looking paint job? Start with Dupli-Color Filler Primer to achieve that dream paint job.