Temco 4 Gauge 36in - 1/4 3/8 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 Hole Size: 1/4", Second Hole Size: 3/8" 4 AWG, Copper Conductor Max Voltage: 600 V, Max Amps: 150 Nominal Outside Diameter: 0.348" / Stranding (qty. dia): 364/0.01"