Bosch 18-Volt 1/4-inch and 1/2-inch Brushless Cordless Impact Driver Kit combines the versatility of a 1/4-inch quick-change hex shank with the strength of a 1/2-inch square drive, allowing you to use both bits and sockets with ease. The EC Brushless motor delivers an impressive 1,800 in. lbs. of torque and up to 4,200 impacts per minute, providing professional-grade power for even the most demanding tasks. The impact driver eliminates the need for socket adapters, transmitting more torque directly through the 1/2-inch square drive anvil. This kit includes one 18-Volt 2.0 Ah SlimPack battery and charger, ensuring outstanding runtime and convenience.