Bosch GSB18V-535CN Impact Tough™ 7.9" Hammer Drill Driver Tool 18V combines next-gen user control with a compact, powerful cordless tool. The GSB18V-535CN 18 V EC Brushless Connected-Ready Compact Tough 1/2 In. hammer drill features Bluetooth® connectivity, Bluetooth® connectivity (which connects with an optional Connectivity Tool Module), linking the free Bosch Toolbox app on a mobile phone for enhanced tool control and detailed feedback. It has a powerful EC Brushless motor, that provides ample power for 535 In.-Lbs. of torque and 0-28,500 beats per minute (BPM). It features the Bosch Compact Tough design for professional results in a compact package. It has variable speed settings; one for high-speed (0-1,900 RPM) and one for high power (0-600 RPM). The cordless drill has KickBack Control, which reduces the risk from sudden rotational torque reaction in a bind-up scenario for reduced the risk of user injury. The 20+1 precision clutch reduces fastener damage and prolongs tool life. It has an all-metal chuck that provides durability, and it has a longer belt clip for a more secure hold. This is a bare-tool kit; the battery and charger are sold separately.