4 IN 1 WELDING MACHINE: Capable of flux MIG, gas MIG, Stick, Lift TIG (need to purchase extra tig lift torch). Meets your various welding needs. Suitable for DIYers and Pros. SYNERGIC CONTROL: Select different thicknesses or adjust the amperage, the recommend voltage and wire feeding speed will be automatically switched into, you can also adjust according to your welding habit. Easy to use for beginners and professionals. LED DISPLAY: Compared to other traditional displays, our intelligent LED display can help you view the data more clearly, such as the current, function mode and welding mode.