If you’re down to bare metal or plastic, trust us: primer will make for a much better repair. The TUD Primer will work on any substrate: plastic, metal, fiberglass . . . you name it. The TUD Primer will adhere to any of these with a tenacious bond. Our Primer has specific leveling properties that allow it to fill small scrapes, scratches, or dings, while at the same time sealing off the substrate below to help prevent corrosion. And, most importantly, our paint loves sticking to our primer.