10401112 - Tweco Classic 4 MIG Gun 400A 12ft 1/16 Wire

The Gun You Can Trust on the Toughest Jobs

If you have been in the welding game for any length of time, you know the Tweco Classic No. 4. It is the MIG gun that set the standard. When you are under the hood for eight hours a day, you need a torch that feels right in your hand and doesn't quit when the heat turns up. This 400 Amp, 12-foot version (SKU: 10401112) is built to handle the abuse of heavy fabrication shops, shipyards, and construction sites without missing a beat.

What makes the Classic 4 a favorite among welders is its simplicity and reliability. The ergonomic curved handle provides excellent balance, reducing wrist fatigue during long welds. The trigger action is crisp and dependable, designed to last through millions of cycles. But what really sets it apart is how easy it is to fix. We know that in the real world, things break. The Classic 4 is designed to be field-repairable. You can swap out the liner, change the switch, or replace the neck right at your station, getting you back to burning wire in minutes rather than hours.

This specific setup comes ready to run 1/16" wire, perfect for those heavy structural welds where you need to lay down serious metal. The 12-foot cable gives you enough room to move around your workpiece without the feed issues sometimes associated with longer guns. It uses the consumables you likely already have in your toolbox—standard Tweco tips and nozzles. Don't settle for lightweight imitations; stick with the gun that built the industry.