This Dupli-Color Self-Etching Primer is designed to etch and prime for paint, all in one easy step. It features superior adhesion and is perfect for spot repairs. Dupli-Color Self-Etching Primer can be used on all of today's automotive finishes. It is also ideal for most plastic, fiberglass, bare steel, aluminum, and stainless steel materials. Get ready for easy priming, with Dupli-Color Self-Etching Primer.