The GXL18V-239B25 Bosch 18V 2-Tool Combo Kit with two CORE18V next-gen Li-ion 21700 cell technology features two tools designed to deliver professional cordless drilling and driving performance. The GXL18V-239B25 Bosch 18V 2-Tool Combo Kit features two CORE18V batteries that provide next-gen Li-ion 21700 cell technology in lightweight high-power batteries with all-day performance. GXL18V-239B25 Bosch 18V 2-Tool Combo Kit includes a GDX18V-1600 Bosch Freak Bit -Socket Impact Driver that has a two-in-one chuck that offers a 1 -4 In. quick-change hex shank with power groove for bits and a 1 -2 In. square drive for sockets. Its motor produces up to 1 600 In.-Lbs. of torque and up to 0-3 600 impacts per minute. The HDS181A Bosch Compact Tough 1 -2 In. Hammer 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.-Lbs. of torque up to 27 000 bpm in hammer mode and two drilling speeds (0-1 900 rpm for high speed and 0-500 rpm for high power). GXL18V-239B25 Bosch 18V 2-Tool Combo Kit includes an 18V charger to get the user back to work fast and it has two longer belt clips that provide a more secure hold.