Recreational Vehicle 14-50 plug charge from 14-60 power outlet. Molded with electroplate copper terminal in order to avoid surface oxidation effectively. RV 4-prong 14-50 female connector with handle, Welder 4-prong 14-60 male plug with handle. Used UL STW 6AWG*3+8AWG*1 stranded conductor inner wire, support max 50 AMP loading. Heavy-duty 100% copper wire conductor inside. Length: 18 inch