2015 Everlast PowerTig 255EXT DIGITAL AC DC TIG STICK Pulse welder 220 Volt Inverter-Based AC DC Lightweight and portable Digital/Micro-controlled // 250A/ 20V @ 60% Duty Cycle/ 40 C AC Wave Forms: Advanced Square /Soft Square / Triangular / Sine DC Pulse Frequency: .1-500 Hz / Standard AC Pulse Frequency: .1-250Hz Hot Start Amps: 0-100% Stick : Adjustable Arc Force Control Stick Hot Start Typ:Adjustable Hot Start