That’s a Lenco G-600 Welding Ground Clamp
What it is:
• Brand: LENCO
• Model: G-600 stamped on the body
• Type: Heavy-duty C-clamp style welding ground clamp
• Material: Cast copper alloy body + copper screw. That’s why it has that bronze/copper color
What it’s used for:
This is your work lead / ground connection for welding machines.
Main uses:
1. Welding ground - Clamps onto your workpiece, table, or welding fixture to complete the circuit
2. High amperage work - The G-600 is rated for 600 Amps. Used for stick, MIG, TIG, and gouging