Bosch 18V 1/2 in. hammer drill. Engineered for tough jobs, with next-gen convenience and CORE18V power. Next-gen hammer drill power and control. Engineered with Bluetooth connectivity, connects to optional Connectivity Tool Module to customize tool settings on a connected device. Compact CORE18V 4.0 Ah Li-ion battery. KickBack Control reduces the risk from sudden rotational torque reaction in a bind-up scenario. EC Brushless efficient motor delivers 535 In. lbs. of torque with a long lifetime. Precision clutch with 20+1 settings provides driving accuracy for reduced fastener damage. Uses enhanced 21700 cell technology, combined with advanced battery design for greater efficiency, to produce longer runtime. Cutting-edge cell design engineered to improve performance. Bosch-exclusive CoolPack 2.0 technology. Upgraded all-metal chuck for more durability, along with first-rate bit retention. Drill-area LED with feedback illuminates dark zones and provides tool-status change feedback. Works