Cable Tray Grounding Connector, Grounding Wire Size 2 to 2/0 AWG SOL, 2 to 2/0 AWG STR, Material Copper, Number of Wires - Grounding 2, Description/Special Features Direct Burial, Ribbed Neck Bolt, For Maximum Ground Conductor Wire Size 2/0 AWG STR, For Minimum Ground Conductor Wire Size 4 AWG SOL, For Use With Aluminum Conductor, Cable Tray, Copper Conductors, Flat Bar, Grounding Wires Connected To Cable Tray, Standards UL Listed Direct Burial, UL467, Type - Grounding Connector Mechanical