Milwaukee 2239-21 M12 Clamp Gun Clamp Kit Ergonomic Pistol Grip Design Best Orients Jaws and Display Extra Large Jaw Size of 1.57 measuring up to 1000 MCM cable Wide Current Range to 1000 Amps AC/DC CAT IV 600V / CAT III 1000V for greater safety Best In Class Warranty- 5 Years