The Forney 500 Amp Steel Ground Clamp is a rugged, economical ground clamp for shop maintenance and field work. Good positive connection. Suitable for all farm and shop welders. Forney Industries is one of Americas longest operating family-owned metal working product companies. Founded in 1932, Forney offers more than 5,000 products for the hardware, automotive, farm and ranch and do-it-yourself markets. 8-Inch (203.2 mm) long with 2-Inch (50.8 mm) jaw opening. Accepts up to No.1/0 welding cable. Proof of purchase required. neglect, negligence or accident, or that has been used in any way contrary to the purpose intended.