BOSCH GDX18V 1800CB25 - 18V EC Brushless Connected-Ready Freak 1/4 In. and 1/2 In. Two-In-One Bit/Socket Impact Driver Kit18V Two In One Impact Driver Versatile two in one impact driver and impact wrench design features a versatile hex shank with power groove and a socket drive, an EC Brushless motor delivering up to 1,800 In. Lbs. of torque, increased control for less fastener damage and Bluetooth connectivity Two in One Bit Socket includes a 1 4 In. quick change hex shank with power groove and a 1 2 In. square drive, for using either bits or sockets CORE18V battery