Super high concentration of zinc or copper in the dry film.
U-POL Products UP0789 Weld #2 - Weld Through Copper-Rich Primer
450 mL U-Pol Weld #2 Through Zinc Rich Aerosol Primer UP0789 Automotive (2 Pack)
450 mL U-Pol Weld #2 Through Zinc Rich Aerosol Primer UP0789 Automotive (3 Pack)
450 mL U-Pol Weld #2 Through Zinc Rich Aerosol Primer UP0789 Automotive
450 mL U-Pol Weld #2 Through Zinc Rich Aerosol Primer UP0789 Automotive (6 Pack)
