The Chicago Pneumatic CP66 Nutrunners offers high power, low maintenance and low vibration. These nutrunners weigh as little as 8.3 lbs and are equipped with a sturdy stabilizing arm to aid operator comfort. These tools are designed for flange-related and other bolting applications and are designed to provide a more durable, powerful and safer alternative to an impact wrench. With models capable of delivering 96-, 1,900 or 3,100 ft-lbs of torque, these nutrunners are designed to deliver the right amount of torque to tighten or loosen bolts ranging from 20mm to 45mm.