The H&S Autoshot AC/DC Pulse TIG Welding System, No. HSW-6321, is designed for aluminum and steel alloys and provides 30 to 200 amps of power on either a 115V or 230V line. The welder features digital control selection of lift-arc, HF or MMA modes, 2T/4T trigger, square, sine, triangle AC or DC wave form, pre and post gas, slope, power range, pulse, frequency, AC balance and 10 program memory. The standard package includes the pulse inverter power supply, HSM17 TIG torch 12.5', 200A electrode holder 10', 200A earth clamp 10', foot pedal control 12.5', gas regulator with hose, AK-2 kit and operator manual.