-Used to assist in driving pointed ground rods into the earthPart Number DT12 Article Number 158060 Material Steel Ground Rod Diameter, Nominal 1/2" Length 1 (L1) 80 mm Length 2 (L2) 40 mm Diameter 1 (Ø1) 19 mm Diameter 2 (Ø2) 13.5 mm Certifications Qualifoudre Standard Packaging Quantity 5 pc UPC 78285687136 EAN-13 8711893017328