Dewalt brushless motor delivers up to 57% more run time over bushed. XR Li-Ion batteries with fuel gauge provide 33% more capacity over standard packs. High-speed transmission with two speed setting (0-550/0-2,000 RPM) delivers up to 30% faster application speeds. Ergonomic comfort grip handle provides ideal balance and tool control. Metal 1/2″ ratcheting chuck for superior bit gripping strength. 3-mode LED provides lighting in dark or confined space up to 20 times brighter than previous models.