This kit from Bosch includes a powerful hammer drill, two 18-V 4.0 Ah FatPack batteries and an 18-V charger. This tool features Kick Back Control and a precision clutch with 25+1 settings for longer tool life and accurate fastener driving with reduced overtightening. It features an upgraded and durable all-metal chuck, and delivers outstanding bit grip and torque transfer. The efficient EC brushless motor delivers outstanding runtime and longer motor life. It produces up to 663 in/lbs. of torque, a no-load BPM of 0-31,500 and a no-load RPM of 0-2,100 RPM. It has a variable-speed selector / one setting for high-torque driving (0-480 RPM) and one best for high-speed drilling (0-2,100 RPM). It features Bosch's Electronic Motor and Cell Protection, tough Durashield(TM) housing, an LED for illumination and a long belt clip. It is an easy tool to handle, with a sure-grip side-assist handle and an ergonomic grip zone.