Quality tested paint & primers formulated to meet the marine environment. Self-etching phosphate primer chemically bonds with aluminum and steel to form a corrosion-resistant base coat. Includes: For aluminum surfaces above or below the waterline use our Zinc Chromate; this power primer etches into the aluminum to form a strong surface / primer bond that is corrosion resistant.; For surfaces above the waterline including bare metal steel iron fiberglass and wood.; For steel and iron surfaces especially welded joints above or below the water line use Zinc Cold Galvanizing or Zinc Phosphate; this corrosive barrier contains a high percentage (95 ) of zinc giving maximum protection against solvents and abrasives.; Quick-dry formula!; Improves bonding of color coat.; Helps Fight Rust.; Helps level nicks & hairline cracks.; 12 oz. Net Weight.;Specifications Weight: 1.18 lbs – SKU: MCDRM92846.