10401052 - Tweco Spray Master MS450 MIG Gun, 450A, 15ft, 1/16 Wire, Tweco Connection

The Legend in MIG Welding Comfort and Power

If you are pushing big wire and burning hot all day, you need a gun that can take the heat without cooking your hand. The Tweco Spray Master MS450 is legendary among welders for a reason—it just works. This 450-Amp beast is built to handle the intense heat of spray transfer welding, giving you the power you need to lay down heavy beads on thick plate. This specific setup (1040-1052) comes with a 15-foot lead, giving you plenty of room to move around large weldments without constantly dragging your feeder.

Comfort is king when you are under the hood for hours, and the Spray Master handle is designed to fit naturally in your hand. It reduces grip fatigue and provides excellent balance, even with the heavy copper cable required for 450 amps. The trigger action is crisp and reliable, and the knuckle guard helps protect your hand from spatter and radiant heat. It comes set up for 1/16" wire, perfect for heavy structural work, but can easily be adapted for other sizes with a quick liner and tip change.

One of the best things about the Tweco Spray Master is how easy it is to keep running. You don't need a degree in engineering to change a tip or a liner. The consumables are tough, affordable, and easy to find. The Tweco backend plugs right into most standard feeders, so you can get hooked up and start welding in minutes. Whether you are in a shipyard, a railcar plant, or a heavy fab shop, the MS450 is the workhorse you want by your side.