ATD Tools 2102 1/2" Super-Duty Composite Impact Wrench Lightweight, Durable Composite Housing; Advanced Design, Twin Hammer Impact Mechanism Pressure Feed Lubrication System; 4-Position Power Control Selector Handle Exhaust; Variable Speed Trigger Specifications: Maximum Torque at 90 psi: 900 foot pounds Free Speed: 7500 rpm Weight: 4.4 pounds; Length: 7-5/8"; Average Air Consumption: 5.5 CFM