Ingersoll Rand W5110 1/4" 20V Quick Change Mid-Torque Hex Drive Impact 165 ft-lbs of maximum torque, to deliver all the power you need - when and where you need it most Compact size and hex drive for greater accessibility & versatility, allowing quick use with a variety of accessories in the tightest of spaces Strong, lightweight, steel-lined aluminum hammer case protects internal components; patent-pending metal reinforced housing withstands repeated drops Quick and simple battery change with easy-to-use battery interface; compatible with IQV20 series batteries Compact and durable motor offers optimal performance and long life