The 1/4 "and 1/2" hammer driver combines a cordless hammer drill and an 18-volt wireless charging kit. It provides the operator with the best torque and versatility, while the set includes a 4.0 Ah wireless FatPack battery, wireless charger and charging frame, so users always have the tools they need, reloaded. Impact drivers help users get the job done with the Bosch Socket Adapter, which allows you to switch from 1/4 "to 1/2" square drive. With three speed and torque settings and a brushless EC motor, the tool's hammer and anvil system provides maximum strength, and 1650 in-lbs of torque, making it the most powerful impact driver in its category.Wireless Charging kit allows users to charge the battery while still in toolQuick-change socket-ready adapter for 1/4 In. hex and 1/2 In. square driveBosch's long-running wireless 4.0 Ah FatPack battery includedCharger's foreign object detection stops charger from activating needlesslyFrame has battery guide rails to ensure proper alignment1/4 In. and 1/2 In. socket-ready impact driver is most powerful in classHassle-free EC Brushless motorDon't need both an impact driver and impact wrench; no socket adaptersDelivers a Max of 1,650 In.-Lbs. of torque