TIG Welder Conversion Kit for Cold Welding Upgrader, 220V TIG Spot Welder. Upgrade for 99.9% of argon arc welders. Welding time: 1999msInterval time: 1999ms. Spot welding, Argon arc welding, Continuous welding. Pulse frequency: 120HzPulse duty cycle: 199%. 225mm × 143mm × 190mm.