0904695003 - ESAB MK 150 Galvanized Earth Clamp 150A

Get a Grip on Your Ground

Every welder knows that a bad ground means a bad weld. Sputtering arcs, wandering puddles, and hard starts are often traced back to a loose or corroded earth clamp. The ESAB MK 150 Earth Clamp is your reliable partner for fixing those grounding headaches. Designed for light fabrication, automotive repair, and hobbyist projects, this clamp is built to bite hard and hold on, giving you the smooth, consistent arc you need to lay down perfect beads.

This isn't just a flimsy clip; it's a solid piece of galvanized steel hardware. The galvanization means it resists rust and corrosion, so you don't have to worry about it seizing up or losing conductivity if it sits in your truck or a damp garage. With a 150 Amp rating, it handles most standard stick and MIG welding jobs with ease. The spring is stiff enough to ensure a solid connection but not so impossible that you need two hands to open it. It opens up to 50mm (about 2 inches), which is plenty of room to grab onto the edge of a worktable, a piece of angle iron, or a pipe.

Attaching your welding cable is straightforward—no complicated tools required, just a solid bolt connection that keeps the lead secure. Whether you are fixing a fence, working on a car exhaust, or building a custom bracket, the MK 150 is the kind of tool you can clamp on and forget about. It’s compact enough to fit in your pocket or a small toolbox, making it perfect for mobile repairs.

Don't let a cheap ground clamp ruin your work. Upgrade to the ESAB MK 150 and experience the difference a solid return path makes. It’s durable, affordable, and backed by the quality you expect from a brand like ESAB. When your ground is good, your welding is better—simple as that.