The mig 160en is a powerful 150 amp dual purpose machine that offers the advantages of standard mig welding but without the need for gas bottles it can easily be converted to use conventional shielding gases but is supplied with a special flux coated wire that produces it39s own gas shroud as it burns this feature allows the machine to weld without gas simplifying its use and making it ideal for outside use since there is less chance of breeze blowing away the shrouding effect of the gas