Grounding Connector, Grounding Wire Size 4 AWG to 300 kcmil SOL, 4 AWG to 300 kcmil STR, Material Copper, Number of Wires - Grounding 2, Description/Special Features Direct Burial, For Maximum Ground Conductor Wire Size 300 kcmil, For Minimum Ground Conductor Wire Size 4 AWG SOL, For Use With Copper Conductors, Flat Bar, Grounding Wires Connected To 1/4 in Bar, Standards UL Listed Direct Burial, UL467, Type - Grounding Connector Mechanical, Accessory Type Ground Clamp, Overall Height 2 in