The Car-Rep® 1K High Build Primer is a professional grade filler and primer designed for superior surface preparation. Its high build formula fills imperfections with ease while offering excellent adhesion and corrosion resistance. This light grey primer dries fast, sands smoothly, and provides a flawless foundation for basecoats or topcoats. Compatible with bare aluminum, galvanized steel, OEM finishes, old paint, and most plastics (not recommended for Styrofoam). With unlimited pot life, you can use the entire can without waste making it a reliable choice for professionals and custom painters alike.