Brushless motor of cordless drill combo kit delivers up to 57% more runtime over brushedXR Lithium Ion batteries with fuel gauge in cordless tools combo kit provide 33% more capacity over standard packsDCD791 20V max 1/2-inch Drill/Driver in the drill/ impact driver combo kit has a compact (6.9-inch front to back) and lightweight (3.4 lbs.) design to fit into tight areasDCF887 20V max 1/4-inch Impact Driver has a compact (5.3-inch front to back) design to fit into tight areasDCD791 features a 3-mode LED with 20-minute trigger release delay in Spotlight Mode, providing increased visibility in dark or confined spacesDCF887 features 3 LEDs imbedded in front of tool with 20-second trigger release delay providing increased visibility in dark or confined spaces