The Monster 3/8” Mini Butterfly Impact Wrench, No. MST715, features a rocking lever that enables the tool's motor to adjust its speed smoothly in either direction, using one hand. The 5.5", 1.1-lb tool is equipped with a twin dog clutch that offers faster rundown speed with balanced torque output while emitting less vibration. The tool also offers three position power settings, a 180-degree swivel air inlet, low air consumption and up to 80 ft/lbs of torque with a 12,000 rpm free speed.