The Bosch IDH182WC-101 18V EC Brushless 1/4 In. and 1/2 In. Socket-Ready Impact Driver wireless packages a professional-grade cordless hammer drill/driver with an 18V Wireless Charging Kit. The IDH182B impact driver provides the operator with the best in torque and versatility, while the kit includes a wireless 4.0 Ah FatPack battery, wireless charger and charging frame, so users have what they need to always be power ready. The impact driver helps users get the job done, with Bosch's Socket-Ready adapter to toggle from 1/4 In. hex and 1/2 In. square drive. With three speed and torque settings powered by a hassle-free EC brushless motor, the tool's hammer-and-anvil system that delivers maximum impact endurance, delivers 1,650 in.-lbs. of torque, making it the most powerful impact driver in its class. The included wireless 4.0 Ah FatPack battery has Bosch's CoolPack technology to give it additional runtime, while the frame helps the charger and battery work smoothly.