Milwaukee brushless motor is optimized for efficiency. This motor delivers over 30% more run-time and longer life than brushed motors. Delivers 5000 rpm for smooth， powerful cutting. REDLINK Intelligence with advanced overload protection defends against abusive applications and monitors the temperature to prevent damage and ensure maximum tool and battery life. REDLITHIUM XC5.0 battery pack provides superior pack construction， more work per charge and more work over the life of the pack. Features a magnesium shoe as well as magnesium upper and lower guards. Integrated rafter hook for easy storage. LED (light emitting diode) light for increased accuracy and visibility. Integrated dust port on guard. Electric brake to stop blade after trigger is released. Tool Only - battery and charger not included.