K910-1 - Lincoln GC-300 300A Spring Ground Clamp

Get a Solid Ground Fast with the Lincoln GC-300

Stop wasting valuable arc time fiddling with stripped screws and loose ground clamps. The Lincoln Electric GC-300 Work Clamp (K910-1) is designed for the welder who values speed and reliability. With its "squeeze and go" operation, you can secure your ground in seconds and get back to burning rod. There are no bolts to tighten and no nuts to lose in the dirt—just a heavy-duty spring that delivers immediate, vice-like gripping power to your workpiece or table.

A bad ground is the silent killer of good welds, causing sputtering arcs, porosity, and frustration. The GC-300 combats this with a powerful spring that drives the jaws into the metal, ensuring a solid electrical connection every time. The jaws open a full 2-1/2 inches, giving you the versatility to clamp onto thick plates, pipe edges, or table flanges with ease. Rated for 300 amps at a 60% duty cycle, this clamp handles the heat of long welding sessions without faltering, making it a perfect companion for your stick, MIG, or TIG setup.

Durability is key when you are out in the field or working in a heavy fabrication shop. The GC-300 is built tough with steel and copper construction to survive drops, drags, and the general abuse of industrial environments. The cable connection is straightforward and secure; your welding cable lug bolts directly to the clamp body, preventing the cable from pulling out or overheating due to a loose connection. It is designed to fit #1 welding cable perfectly.

Whether you are repairing heavy equipment in a mine, welding structural steel on a high-rise, or fabricating parts in a garage, a trustworthy ground clamp is non-negotiable. The Lincoln GC-300 gives you the confidence that your circuit is complete and your arc will be smooth. Upgrade your leads today with a clamp that works as hard as you do.