The Handler 130 operates off 115-volt household current. Comes ready to weld without shielding gas using .030-.035 in (0.8-0.9 mm) flux cored wire. This welder includes the patented EZ-Mode feature which allows for simple single knob operation based on material thickness settings. The Handler 130 is equipped with a built-in gas valve, and with the addition of a regulator and gas hose, you’re ready to MIG weld with .023-.030 in. (0.6-0.8 mm) solid wire. Use C-25 gas (75% argon/25% CO2) on 24 gauge – 1/8 in steel for a cleaner weld with less spatter. Use Tri-Mix gas and stainless wire for welding on 16-12 gauge stainless steel.