Are your brake drums and calipers visible behind those fancy wheels? Then restore them to the correct OEM color. At the same time protect against corrosion - all in one easy application. The Brake Caliper Coating (gray, 12 oz. aerosol can) provides excellent protection for cast iron (NOT ALUMINUM) parts and maintains that in.freshly castin. factory finish. Acrylic lacquer, max temp 250 degrees F, 4-15% gloss. One can covers 6 sq.foot, enough for 4 brake calipers.