Weld thru primer Zinc-based formula for best-in-class corrosion protection Enhanced adhesion to bare metal for added corrosion protection OEM recommended ZincWeld Weld-Through Primer Aerosol 12.8 oz Zinc-based formula for best-in-class corrosion protection. Enhanced adhesion to bare metal for added corrosion protection. No flaking or peeling . not affected by cavity wax. Minimizes the heat affected zone while welding. Low weld spatter formula. Smooth spraying and easy covering. Compatible with MIG and STRSW welding 40773