Finger Tip Control, It Turns The Output On And Off And Allows The Operator To Precisely Control The Welding Amperage And Make Adjustments While Welding., TIG Welding AC and DC, For Use With All PipeWorx Welding Systems Solid State Power Sources After Serial No JK674521, Includes 26.5 Feet Cord And Plug. This item has been restricted from sale in the following state (s): []