Features DCD806: Our Most Powerful 20V MAX* 2-Speed Hammer Drill** – Complete a wide range of applications with this hammer drill that is up to 109% more powerful†. DCF845: Complete tough fastening applications on the jobsite with 30% more torque** DCD806: Professional Performance – Complete jobs with top level speed, control, and precision with a high-speed transmission and variable speed trigger featuring 2 settings (no load 0-650/0-2,000 rpm). DCF845: Brushless motor delivers 1825 in-lbs of torque and 3400 RPM to drive large diameter screws