500-Amp T-Style Welding Ground Clamp Brass, 2-Pack 2-Pack 500-Amp Welding Ground Clamp. 8-Inch long with 2-Inch jaw opening. Made of high-quality brass material, which is sturdy and durable. Large surface area provides good cable connections and positive grounding Great for most grounding situations, specially designed for heavy-duty high-current welding applications/MIG/MMA/TIG/plasma welding/cutting machines.