House of Kolor SP1600 Sprayable Polyester Primer is a professional high-build automotive primer engineered to fill sanding scratches, pinholes, waves, and minor surface imperfections. Its sprayable polyester formula creates a smooth, uniform surface that sands easily, making it ideal for collision repair, vehicle restoration, custom paint projects, and show-quality finishes. Designed for use on properly prepared metal, fiberglass, body filler, and composite surfaces, SP1600 provides an excellent foundation for primers, sealers, basecoats, and clear coats, helping painters achieve superior adhesion and a flawless final finish.