Brushless motor allows for improved runtime and durability, and eliminates the need to change brushes. Telescoping shaft allows for easy access to confined spaces and hard-to-reach areas. Wireless Tool Control allows for wireless ON/OFF capability when paired with a compatible dust extractor. Quick, secure, and tool-free connection to DEWALT Dust Extractors via AirLock. Variable-speed dial to help match speed to application. Articulating head helps the sanding pad maintain contact to surface at various angles. 9 in. aerorated sanding pad allows users to cover larger areas with maximum dust collection. 30 minutes of runtime when used with DCB205. Balanced weight distribution helps reduce fatigue.