The JET 400434 AW38PSD is a super-heavy duty 1″-drive pneumatic impact wrench delivering up to 1,800 ft-lb of torque forward and reverse. Its pistol-grip design offers better access in tight spaces. A twin-hammer mechanism ensures smooth, balanced impacts with reduced vibration. It features a pin-hole anvil with spring-clip socket retainer, a four-position throttle valve, adjustable exhaust deflector, and a robust 3-piece construction for easier maintenance.