The DEWALT DCM571 FlexVolt XR Trimmer is fitted with a highly efficient brushless motor with a metal housing for increased runtime, life, durability and efficiency. The variable speed control provides a high/low setting for fast job completion over large areas. The enclosed and durable Xenoy battery housing provides increased protection. Includes a brush cutter adaptor kit and a brush knife, for everything from simple grass trimming to heavy-duty clearing work. DCM571X1: 1 x 18/54V 9.0/3.0Ah Li-Ion BatteryDCM571N: Bare Unit, No Battery or Charger