Grounding Connector, Grounding Wire Size 6 to 4 AWG SOL, Material Copper, Number of Wires - Grounding 1, For Maximum Ground Conductor Wire Size 4 AWG SOL, For Minimum Ground Conductor Wire Size 6 AWG SOL, For Use With Copper Rod, Grounding Wires Connected To 5/8 in Rod, Standards UL, Type - Grounding Connector Hammer, Accessory Type Ground Clamp, For Rod Dia. 5/9 in