3/8" Air Ratchet Wrench, 76 ft-lb Torque, 220 RPM. The 109XPA ratchet wrenches provide an optimized gear ratio and airflow for exceptional performance and durability with 76 ft-lb maximum torque. The 109 model offers a ½” drive, while the 1099 model sports a ⅜” version. Maximum Torque: 70 ft.-lbs. maximum torque at 300 rpm free speed.360-Degree Exhaust: The adjustable exhaust on the 109XPA high torque ratchet wrenches directs air flow away from you and your workspace. Low Profile Forward/Reverse Control: The 109XPA forward/reverse control has a wide diameter for increased ease of use in confined spaces. Increased Reach: Enjoy easier access to deep, hard to reach spaces with these high torque ratchet wrenches. Exceptional Durability: Exclusive IR Twin Pawl Plus head design for exceptional durability.