The Bosch Freak is half driver, Half wrench, all impact. The gdx18v-1800c two-in-one 1/4 in. And 1/2 in. Bit/socket impact driver delivers results, with the two-in-one bit/socket drive that offers a 1/4 in. Quick-change hex shank holder with power Groove for bits, and a 1/2 in. Square drive for sockets. The impact drivers efficient, powerful EC Brushless cordless motor produces up to 1, 800 in.-Lbs. Of torque, while the Bosch hammer-and-anvil system provide maximum impact energy and up to 0-4, 200 impacts per minute. The variable-speed trigger provides accurate driving speed. The driver has an LED light system to illuminate the work area. This is a bare-tool kit; The battery and charger are sold separately.