100% copper wire conductor inside. Molded with electroplate copper terminal in order to avoid surface oxidation effectively. Heavy-duty power adapter cord for RV / Boat / Marine Shore Power inlet on pedestal. 50A 120V Marine Shore Power SS1-50P male plug with locking ring. Used 6AWG*3 stranded copper inner wire in male to Y part, support max 50 Amp loading. 30A 120V Marine Shore Power 2 of L5-30R female connectors with locking ring & collar. Used 10AWG*3 stranded copper inner wire in each female to y part, support max each 30 Amp loading. Length: 36 inches (3 feet) Color: Yellow