Aluminum Wire Feeder—The durable high quality aluminum wire feeder offers a much more stable and better welding experience. 2T/4T—2T(Manual)/4T(Semi-auto) switch is now available; you can release your finger for long time welding job. More Precisely--Customer can adjust the wire feeder speed and welding voltage more precisely with the 2 digital displayers. new designed ground cable quick connector. Rated Output--140-amp MIG welder; mild/stainless steel: 24 gauge - 3/16"; input voltage: 110/120v; it can be easily connected to your existing 110/120v wall outlet.