Pro-Series PS07572 120 Volt Arc Welder, Black and Gray Two Voltage Settings For Better Heat Control Advanced Thermal Overload Protection For Transformers, Welds Mild Steel Up To 1/8-Inch Thick In A Single Pass 20-percent Duty Cycle at50A, Primary Input 20 Amps, Open Circuit Volts (Max) 42VAC Amperage Output: 50A (Low), 70A (High), Handles Electrodes Up To 5/32 Inch In Diameter Overall Size: 15.25-Inch L x 7.25-Inch W x 13-Inch H