The CNBOU 6 AWG *4 pure copper inverter cables include two red cables and two black cables, and the connector is a pure copper nose. The cores are all made of 100% fine stranded pure copper, and the insulation layer is made of high-quality materials that meet national standards. This cables are suitable for CNBOU's inverter, RV & car wiring applications, and any other application where a highly flexible pure copper conductor is required.