The M18 FUEL? Drywall Screw Gun is FASTER THAN CORDED, features AUTO START functionality and delivers UP TO 3X LONGER RUN TIME than other cordless competitors. The POWERSTATE? Brushless motor spins at 4,500 RPM?s resulting in faster productivity. With REDLINK PLUS? Intelligence, Milwaukee's AUTO START feature automatically starts the motor on contact with drywall providing less noise between screws and 3X longer run time. REDLITHIUM? 5.0Ah batteries the drywall gun delivers up to an industry leading 64 sheets on one charge. The M18 FUEL Drywall Screw Gun delivers the balance and weight desired by professionals for all day use.