The Bosch GXL18V-232B22 18V 2-Tool Combo Kit features two tools designed to deliver professional cordless drilling and driving performance. The Bosch Freak GDX18V-1600 Bit/Socket Impact Driver has a two-in-one chuck that combines a 1/4 In. quick-change hex shank with power groove for bits, with a 1/2 In. square drive for sockets. Its motor produces up to 1, 600 in. -Ibs. of torque. The DDS181A Compact Tough 1/2 In. Drill/Driver has an upgraded metal chuck, and its motor delivers the same power as conventional 18V motors in a more compact size. It produces 600 in. -Ibs. of torque and two drilling speeds (0-1, 900 rpm for high speed and 0-500 rpm for high power). This kit includes two 18V 2. 0 Ah Slim Pack batteries and a charger.