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 just about any welder; call us if yours is not listed. 30-day money-back guarantee. Designed and made in the USA.