Sunex SX3835 3/8-Inch Impact Ratchet Wrench Feet Pound of reaction-less torque 500 rpm of free speed Weighs only 2.82-Pound Specifications: square dr. 3/8-Inch torque 70-Feet Pound, free speed 500 rpm, weight 2.82-Pound, length 10.9 -Inch , average air consumption 2.5 cfm, air inlet thread size 1/4-Inch npt, min hose size 3/8-Inch id, sound level 90 dba