Ground Clamp, Brass, 300-Amp. 7-3/8" (187.3mm) long with 1-1/2" (38.1mm) jaw opening. Accepts up to #2 welding cable. Includes shim stock and wrench. For heavy duty use. Large contact area assures positive grounding. Oval-point screw cable connections make installation easy, assuring good, safe cable connections. Wide grooved jaws for positive ground.