This easy-to-use aerosol etches and primes bare, rust-free metal in one step. Eastwood Self Etch Primer adheres to steel, aluminium, stainless and galvanised steels and is compatible with virtually any paint or auto finish. This self-etching formula bonds better to bare metals than other aerosol primer. True Acid-Etching Formulation Sticks to Virtually Any Bare Metal Enhances Adhesion and Durability of Most Non-Epoxy Top Coats Withstands up to 170 degrees F (76 deg. C) The aerosol will cover approximately 10 square feet and US Quart (pre-thinned for spraying) can cover up to 30 square feet. Also available in 2 sizes in Grey Not for use under Eastwood Chassis Black .