Designed to work with an air compressor, this powerful impact wrench delivers up to 850 Nm of nut busting torque in a lightweight design that helps minimize fatigue. The 4-position power regulator and 1-handed forward/reverse button provide complete control, so can easily fine-tune torque output and direction to suit the task at hand. with its rugged housing and titanium hammer case, this impact wrench is designed to withstand rigorous, harsh usage. It features: 2,065 ft./lbs. of reverse torque to handle the toughest jobs, variable speed with 3 forward and 3 reverse power settings, 6 in. extended anvil for easy use in tight spaces, D-handle for low fatigue working grip and stability, strong aluminum housing for reduced weight, twin hammer, handle exhaust directs air away from operator, trigger located internally on handle for ease of use while maintaining tight grip on handle. Specifications: Square Drive: 1 in. with 6 in. extended anvil. Maximum Torque - Reverse: 2,065 (ft./lbs.) Working Torque - Reverse: 400 ft./lbs. to 1,650 ft./lbs. Free Speed : 4,000 RPM. Average Air Consumption: 10 CFM Overall Length: 20.87 in. Minimum Hose Size: 1/2 in. Air Inlet: 1/2 in. NPT Sound Pressure : 93 dB.