Description: Pure Copper Design: This welder clamp is made of total pure copper, offer it excellent clamping and better electrical conductivity. Can be apply to stick welding, submerged arc welding, gas metal arc welding and gas tungsten arc welding. Heavy Duty Arc: 800A-1200A Rating C-style ground clamp is a premium quality for heavy duty arc. The C-Clamp with large contact area features a copper design to resist welding splatter and is perfect for welding set-up chores as well. Max Jaw Opening: 2.2 Inches / 5.9 cm. Specification: Material: brass Maximum effective spacing 59mm Allowable conductivity value 500A Net weight 720g Package Includes: 1 piece G ground welding earth clamp