Temco 2/0 Gauge 12in - 5/16 in Hole Sizes Black 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" 2/0 AWG, Copper Conductor Max Voltage: 600 V, Max Amps: 325 Nominal Outside Diameter: 0.586" / Stranding (qty. dia): 1235/0.01"