DEWALT 20V MAX XR Brushless Drill/Driver with 3 Speeds  - Bare Tool (DCD991B) DEWALT-built high power, high efficiency brushless motor delivers up to 57% more run time over brushed 3-speed, high performance (0-2,000 RPM) all-metal transmission optimizes tool-to-task for fast application speeds and improved run time 3-Mode LED provides lighting in dark or confined spaces up to 20X brighter than previous model, XR Li-Ion batteries with fuel gauge provide 33% more capacity over standard packs Heavy-duty 1/2" ratcheting nitro-carburized metal chuck with carbide inserts for superior bit gripping strength LED Spotlight Mode features 20 minute shutoff function allowing for extended work time in dark or confined spaces