Temco 2 LOT 4/0 Gauge 6in - 5/16 in Hole Sizes Red Solar Battery Cables Power AWG Solar Inverter Golf Cart Car GLUE SEALED Discount applied automatically when quantity lots are bought. First & Second Hole Size: 5/16" 4/0 AWG, Copper Conductor Max Voltage: 600 V, Max Amps: 440 Nominal Outside Diameter: 0.72" / Stranding (qty. dia): 2014/0.01"