Trailer cable --12AWG/7C ,14AWG/7C,16AWG / 7C Inner conductor copper wires ,color pvc sheath, black out jacket . Trailer cable Feature :AWG/square : 7x2.50mm2 OD:14.3mm 7x2.00mm2 OD:12.9mm 7X1.50mm2 OD:11.0mm 7X0.75mm2 OD:10.0mm 7X0.50mm2 OD:9.5mm 7X0.25mm2 OD:8.0mm Inner conductor copper wires , color pvc sheath, black out jacket 7c Trailer cable