The CP749-2 1/2-Inch Super Duty Long Shank Air Impact Wrench. This is an extremely durable and powerful 1/2-Inch impact wrench - 625 ft lbs maximum torque. Oil bath "spring hammer" clutch mechanism for ultimate power and reduced vibration. One handed forward and reverse. Differential regulator with four positive power settings in forward and ultimate power in reverse. 2-Inch extended anvil for tire work. Applications - high volume tire shops. Ultimate torque - 625 ft lbs. Specifications: square drive - 1/2-Inch; standard bolt size - 5/8-Inch; cfm - 5; hose size - 3/8-Inch; torque range - 50 to 450 ft lbs; ultimate torque @ 90 psi reverse - 625 ft lbs.