The new Bosch CLPK224-181 18V combo kit includes two of the industries most innovative power tools with HDH181X Brute Tough Hammer Drill Driver with Active Response Technology and IDH182 Socket Ready Impact Driver. Reduce the risk of injury from kickback or bind-up situations with Bosch Active Response Technology featured in the new the Bosch HDH181X 18V Brute-Tough 1/2 in. Lithium-ion Hammer Drill Driver. The innovative on-board acceleration sensors automatically shut the tool down when a potentially dangerous torque reaction occurs. The Bosch engineered 4-pole motor provides 752 in-lbs. of torque, making it powerful and efficient for drilling a broad range of high torque bits such as spades and augers. As with all Bosch Best Built Cordless tools, the advanced electronic motor and cell protection help prevent overheating and overloading for extended tool life and runtime. A built-in LED light illuminates the workspace for optimal visibility. All-metal Bosch gears and Durashield Tool Housing hold up in even the toughest jobsite conditions, including withstanding multiple 12-foot drops onto solid concrete. The kit also includes the IDH182 Socket Ready Impact Driver featuring the socket ready all-in-one tool holder, which combines a 1/4 in. hex and 1/2 in. drive into one for ultimate versatility to complete a wider range of applications. The socket ready all-in-one tool holder eliminates the need for users to own an impact driver and impact wrench and also eliminates the need for fragile socket adapters. The IDH182 integrates the Bosch Performance Control System, which allows users to adjust tool speed and torque with a push of a button to match the tool's performance to the application at hand. Equipped with Bosch's EC brushless motor, this tool provides 2X the motor life, increased performance and improved runtime.