TIG (tungsten inert gas) electrodes each insert into a compatible TIG torch that is connected to a TIG welder that supplies current to the electrode. An arc is created between the electrode and the workpiece, and the heat from the arc melts the workpiece material to create the weld. The type of electrode used depends on the base material and thickness of the workpiece, as well as the type of output current provided by the welder. Also known as gas tungsten arc welding (GTAW), TIG welding creates clean, precise welds and is ideal for welding thin materials and surfaces that will be visible. A complete TIG torch setup includes a nozzle, collet body or gas lens, collet, insulators, back cap, torch body, torch handle, and electrode.