Description: For 600amp welding/cutting application. Max Jaw Opening: 1.57 Inches / 40mm. For heavy duty high current Submerge/MIG/MMA/TIG/Plasma welding/cutting. It is made of high-quality brass,they are going to last a long time. Heavy duty construction and easy grip handles . The structure is simple and easy to use. Specification: Material: brass Maximum effective spacing 40mm Allowable conductivity value 600A Package Includes: 1 Piece Welding Ground Clamp