The Touch4 fingertip control is an all-new approach to TIG welding amperage control. The idea is simple and innovative, and the result is a steady hand and excellent control: we guarantee it or your money back. Instead of a knob that you have to turn or a slider that you have to move while trying to hold your TIG torch steady, the Touch4 relies on pressure applied by your finger. The Touch4 works in steps: you apply pressure to turn on the contactor, giving you your low-amps setting, and then you increase pressure through 4 additional steps: 25%, 50%, 75%, and 100% of the setting on your panel. Set the amps on your panel to correlate with the thickness and metal type so that 100% is that max amps that you’ll need, and then you simply dither to create the puddle and weld that you want. The Touch4 is designed to work with almost any welder; call us if yours is not listed. Includes 30-day money-back guarantee. Designed and made in the USA.