Tweco GC-600 Heavy Duty Copper Work Clamp

Get a Grip on Your Arc with the Tweco GC-600

Every professional welder knows that a good weld starts with a good ground. If your ground clamp is weak, rusted, or overheating, your arc will sputter, wander, and give you headaches all day long. Enter the Tweco GC-600, a beast of a work clamp built for serious fabrication. Rated for 600 Amps, this isn't your average hobbyist clamp; it is designed to handle the heat and current of heavy structural welding, shipbuilding, and industrial repair without breaking a sweat.

The secret to the GC-600's performance lies in its jaws. Made from a premium copper alloy, they conduct electricity far better than steel clamps, meaning the clamp stays cooler and your voltage stays consistent. Have you ever reached down to move your ground and burned your hand? That's resistance creating waste heat. The GC-600 minimizes that resistance, putting the heat where it belongs—in the puddle. The heavy-duty spring inside provides a vice-like grip, biting through shop dust and mill scale to ensure you have a solid connection every time you strike an arc.

Ergonomics and durability are also key. The tong-style handles are designed for easy one-handed operation, allowing you to move your ground point quickly as you work around large assemblies. The cable connection is robust and designed to hold heavy 3/0 or 4/0 cable securely, so you don't have to worry about your lead pulling out in the middle of a critical pass. Whether you are burning heavy flux-cored wire or running high-amperage stick rods, the Tweco GC-600 is the reliable partner you need to keep your circuit closed and your welds clean.