-Used to assist in driving pointed ground rods into the earthPart Number DT58 Article Number 158070 Material Steel Ground Rod Diameter, Nominal 5/8" Length 1 (L1) 80 mm Length 2 (L2) 40 mm Diameter 1 (Ø1) 22 mm Diameter 2 (Ø2) 16 mm Certifications Qualifoudre Standard Packaging Quantity 5 pc UPC 78285687137 EAN-13 8711893017335