Zimar Plate Zinc Anodes set the standard when it comes to cathodic protection. Zimar plate marine zinc anodes meet all standards set forth by Mil-Spec A-18001K, Mil-Spec A-18001A, and Mil-Spec A-18001. Zimar plate boat zincs are individually hand poured to assure the highest possible zinc concentration and lowest amount of porosity. We carry the entire line of drilled and undrilled bolt on zinc plates, as well as weld on plates and round plates. Order your zinc anodes today and save!