1 piece compact version adapter for 6-50 plug charge from 10-30 240V outlet. Molded with electroplated copper terminal in order to avoid surface oxidation effectively. Dryer 30 AMP 3 prong NEMA 10-30 250V 3-prong male plug. Welder 3-prong 50 amp 250 volt 6-50 female. Used 10AWG conductor inner wire, support max 30 AMP loading. Heavy-duty 100% copper wire conductor inside.