What is MIG? MIG stands for metal inert gas. In stick welding the flux on the electrode melts and forms a gas to shield the puddle from the atmosphere. The atmosphere has hydrogen, nitrogen, oxygen, and other gases that will cause weld defects if allowed to get into the weld pool. Your local Meritus Gas Partners distributor carries a full line of MIG wires including products tailored to mild steel, stainless, aluminum and much more. We carry 2# spools of wire for the hobbyist, all the way up to 900# bulk wire for manufacturing and robotic applications. Visit your local MGP store and let our knowledgeable staff help you find the perfect MIG wire for your job.