ITEM NAME:500A Welding Brass Ground Clamp Spring Earth Clip For MIG MMA TIG Welding Description: The product is 500A Common Charge Clamps. Unlike steel clamps, the body is made of all copper and is therefore heavy and reliable. Large torque and reliable connection. This is made to strip the wire and insert it in the coupler on the clamp and then tighten the bolt onto it to hold the wire lead in. Professional 500A welding grounding clamp grounding bracket for MIG MMA TIG welding machine. Specification: Material: brass Maximum effective clamping distance: 35mm / 1.37inch Allowable conductivity: 500A Package Includes: 1 Piece Welding Ground Clamp SKU: DMO0013435973005185.Professional 500A welding grounding clamp grounding bracket for MIG MMA TIG welding machine. Allowable conductivity: 500A. 1 Piece Welding Ground Clamp. This is made to strip the wire and insert it in the coupler on the clamp and then tighten the bolt onto it to hold the wire lead in.