This all-in-one self-etching primer is ideal for prepping bare metal surfaces before applying truck bed liner or other coatings. It promotes excellent adhesion, even on difficult surfaces like galvanized steel and aluminum, and provides superior corrosion protection.Key Features: Excellent Paint Adhesion: Etches and primes bare metal in one step, creating a strong bond for long-lasting finish. Superior Corrosion Resistance: Phosphoric acid etch formula creates a protective barrier that prevents rust and corrosion on metal surfaces. Fast Drying: Provides quick drying times between coats, allowing you to work efficiently on your project. Sandable Finish: Delivers a smooth, sandable finish that's ready for top coating without additional prep work. Easy Application: Features a flat fan nozzle for superior control and coverage. Ideal for: Truck beds Automotive projects Bare metal surfaces Galvanized steel Aluminum Usage Instructions: Clean the surface: Thoroughly clean the metal surface with a universal surface cleaner. Sanding: For overall refinishing, use P180 grit sandpaper. For spot repairs, use P320 grit sandpaper. Blow off and clean again: Remove any sanding dust with compressed air and wipe clean with a universal surface cleaner. Shake the can: Shake the primer can for one minute before use. Apply even coats: Apply 2-3 light coats of primer, allowing 5-10 minutes flash time between coats. Top coat application: Allow 20 minutes drying time before applying your desired top coat. With its exceptional adhesion, corrosion resistance, and ease of use, this self-etching primer is a valuable tool for any automotive or DIY project.