The Bosch IDH182-01 18 V EC Brushless 1/4 In. and 1/2 In. Socket-Ready Impact Driver delivers results, with the Socket-Ready adapter that has a 1/4 In. hex and 1/2 In. square drive in one tool. A Performance Control System provides three speed and torque settings for maximum effectiveness. The tool is powered by a hassle-free EC brushless motor. The hammer and anvil system that delivers maximum impact endurance, and the tool provides superior ergonomics, with the smallest grip diameter in the class. The impact driver kit includes two long-lasting FatPack batteries and a charger.