Genuine Tweco No. 4. The classic.

This 400amp @ 60% duty air cooled MIG torch can actually handle 400amps air cooled. It has been the go to staple product for 40+ years. It’s heavy duty, long-lasting, and can handle 300amps with Argon/Co2 mixed-gas @ 100% air cooled (10 minutes continuous / 10 cool down before the trigger melts).

A TBi MB36 air cooled MIG torch (360amp rated torch) for example can only weld @ 300amps for 4 minutes / 6 minutes cool down, and the parts aren’t as robust and hard-wearing as the Tweco design.

Despite being quite heavy and a bit bulky, it’s actually well balanced and feels sturdy when welding hot. Welders love this torch because it can take the abuse a workshop throws at it, without letting the operator down.

For fabrication shops wanting to keep their welding machines air cooled, simple, and straight-forward, this torch can hammer 1.2mm wire welding 15mm to 15mm plate all day, before you need to go water cooled.

At Spectrum we always keep stock of this product, as it’s always been popular, and still in demand after all this time.

Instead of 24A50 adjustable shroud and 34A black insulator this torch comes with from factiory, we tend to recommend the heavy-duty consuamble setup including 34CT threaded nozzle body, 24CT62 threaded tapered shroud, 54A M6 tip adapter, and the thicker M6 14H45 1.2mm or 14H52 1.3mm heavy-duty tips (1.3mm if welding 1.2mm wire @ 300amps+) .