20-Volt MAX XR Cordless Brushless Hammer Drill/Impact Combo Kit (2-Tool) with (1) Battery 2Ah and (1) Battery 4AhThe DCK287D1M1 20 Volt MAX XR Brushless Lithium Ion Hammer Drill Driver Impact Driver Combo Kit features DEWALT built Brushless motors. Brushless motors deliver up to 57% more run time versus Brushed motors. This kit includes one 2Ah and one 4Ah battery, charger and contractor bag for storage. California residents see Prop 65 WARNINGS Both the drill and impact have a DEWALT brushless motor which delivers up to 57% more run time over brushed DCF887 has