The Mac Tools 1/2" Drive Aluminum Impact Wrench, No. MPF970501, features 1,100 ft-lbs of reverse breakaway torque and a twin-hammer mechanism for power and longevity. The tool also features a variable-speed trigger for speed control, reverse-bias motor for more reverse torque to remove stubborn bolts, and a variable-valve design for dialed in speed control. The impact wrench is also available in a 2" extended anvil version, No. MPF970501. The tools are textured with an anti-slip comfort grip.