The Bosch GXL18V-225B24 18V EC Brushless Combo Kit provides the best in cordless productivity on the jobsite. It combines two CORE18V batteries with the IDH182 1/4 In. and 1/2 In. Socket-Ready Impact Driver and the HDH183 Brute Tough 1/2 In. Hammer Drill/Driver. The IDH182 features a 1/4 In. hex receiver and a 1/2 In. socket interface combined in one chuck. The HDH183 Hammer Drill/Driver features KickBack Control， a 25+1 precision clutch and an upgraded chuck. The CORE18V 6.3 Ah battery is the best-built battery on the planet*， with performance comparable to competitor batteries up to 35% larger. The included fast charger charges a CORE18V to 80% ready in only 41 minutes. *vs. leading power tool competitors