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5/8" x 8', Bonded Ground Rod, Uniform Electrolytic Copper On Steel Core, Minimum Copper Depth 10 Mils, UL Listed.
5/8" x 8', Galvanized Ground Rod, Zinc Coated High Strength Steel, Minimum Zinc Thickness 3.9 Mils, Meets NEMA & ANSI Standards, Non UL Listed.