Bosch, 18 Volt, 2-Tool Combo Kit. Includes 1/2 in. Hammer Drill/Driver, Freak 1/4 in. and 1/2 in. Two-In-One Bit/Socket Impact Driver and (2) 2.0 Ah SlimPack Batteries. Brushless 18 Volt combo kit includes two tools (impact driver and hammer drill) for power, with two SlimPack 2.0 Ah batteries. Half driver, half wrench Freak features a 1/4 in. quick-change hex shank and a 1/2 in. square drive, for either bits or sockets. Powerful hammer drill/driver design made with a brushless motor to deliver runtime and power for tough applications. Powerful EC Brushless motors both impact driver and hammer drill have EC Brushless motors for superior efficiency. Upgraded metal chuck featured on hammer drill/driver for greater durability, with greater power transfer. Precision clutch with 20+1 settings provides driving accuracy for reduced fastener damage. All-metal chuck for more durability, along with first-rate bit retention. Built-in LED light featured on both tools.