The Dewalt DCD77B is a 2-speed brushless 20V drill/driver. The high-quality brushless motor inside gives the drill 57% more runtime over brushed motors. The drill/driver allows for multi-use and can be used for a variety of different jobs. Perfect for use on a worksite or just for home use and DIY projects. Compact and light weight design allows the DCD77B to be used in tight areas for long periods of time if needed.