The M18 FUEL 457mm Die Grinder with a 1/4 inch drive is designed to use for industrial applications. Brushless motor operates with the help of a REDLITHIUM battery that delivers continuous runtime and efficient operation. The 5 Amp-hours battery has a shelf life of 20 minutes. RedLink electronic intelligence provides good protection against overloading thus ensuring user safety. Carbide tips and the 3 inch flap wheels helps in easy grinding and surface preparation applications.