The 109XPA and 1099XPA 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 3/8" drive, while the 1099 model sports a 1/2" version.; 360-Degree Exhaust; The adjustable exhaust on the 109XPA and 1099XPA high torque ratchet wrenches directs air flow away from you and your workspace.; Low Profile Forward/Reverse Control; The 109XPA and 1099XPA 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.