Heavy-duty for Welder, 100% copper conductor inside. Welder 3-prongs NEMA 6-50 lighted connector right-angle, 40 Amp / 250 Voltage. STW 8AWG/3C stranded wire extension cord, support max 40 AMP overload, Max Rate 10000 Watt (250V). Molded with electroplate copper terminal in order to avoid surface oxidation effectively. Universal to All Other Brands 6-50 Welding Machine 3-pole. Length: 25 FT (25 Feet).