GC Series Ground Clamp 27-GC500 features a rugged all-steel body with heavy duty springs and circular "Grabbers", copper alloy jaw, for a superior "grip" and "ground" on pipes, angle iron, plate and miscellaneous odd shapes. Pure copper braided shunt on model 27-GC500 allow both jaws to carry welding current. Cable Capacity: 1/2" Stud Connection. Jaw Opening: 2". Length: 9-1/2".