The Bosch HDS183B 18V EC Brushless Compact Tough™ 1/2 In. Hammer Drill/Driver is an efficient cordless tool with long runtime, and it features KickBack Control. This technology reduces the risk of sudden tool reactions in binding conditions. The integrated acceleration sensor automatically shuts the tool down when a potentially dangerous rotational torque reaction occurs in a bind-up scenario. The drill was engineered with an upgraded, heavy-duty all-metal chuck that furnishes increased robustness and high torque transfer. Its efficient EC Brushless motor delivers longer tool life as well as great runtime. One of Bosch's Compact Tough™ designs, it has a short head-length and light weight but plenty of muscle. It delivers a powerful performance, with 531 In.-Lbs. of torque, two drilling speeds (0-1,900 rpm for high speed and 0-600 rpm for high torque), an impact rate of 28,500 bpm for masonry applications and 20 1 precision clutch settings for reduced fastener damage. This tool provides an ergonomic grip zone and Bosch's Electronic Motor Protection and Electronic Cell Protection, to protect the tool and batteries from overload and overheating. It includes a long belt clip for a secure hold. This is a bare-tool kit; the battery and charger are sold separately.