Super Duty Air Impact Wrench The highly-regarded model combines compact size with high output, which makes it perfect for everything from spring work to pinion nut and track pad removal and major engine teardowns. Features * Twin hammer mechanism, * Up to 885 ft.-lbs. of torque * Trouble-free, longer performance aided by the Pressure-Feed Lube System Drive (in.) - 3/4 Max. Torque (fl.lb./Nm) - 885ft lbs/1200nm Free Speed (rpm) - 4,600 Standard Bolt Cap. (in./mm) - 1"/25 Net Wt. (lbs./kg) - 12.4/5.62 Air Inlet (in.) - 3/8