Stud Welder, Duty Cycle 1/4 in 12/min, For Maximum Material Thickness 1/4 in, For Minimum Material Thickness 14 ga, For Material Type Aluminum, Brass, Copper, Galvanized, Stainless Steel, Steel, Zinc Coated, Input Voltage 110 V AC, Phase Single-Phase, Rated Output Range 45V DC to 200V DC, Stud Welding Process Capacitive Discharge, Weld Rate 12 per minute, Series CD-212, Welding Processes Stud Welding, Capacitance (pF) 66,000 uF