Cooper Tools MP2265 3/8" Impact Nutrunner, Reversible,10-55 ft.lbs.

Master Power® Fastening Tools are designed to provide slightly more torque (with throttle wide open) than required for the largest fastener that may be encountered. And the Master Power® pneumatic screwdrivers come with an Integral Quick Change Chuck - quick change bit adapters or 'slip bit adapters', for quick change and positive retention of 1/4" hex bits, bit and finder combinations, insert bit holders, socket adapters and many other accessories. Reverse action is standard on all Master Power® Screwdrivers and Nutrunners, too. This feature allows for the removal of rusted, cross-threaded or extra-tight fasteners easily. All Master Power® Fastening Tools are tough, too. From heavy-duty spiral bevel and planetary gearing to direct drive and positive clutches, every tool comes ready to work - for a long time.