The DCM571 is the first high power 54V Grass Trimmer / Brush Cutter from DEWALT. The DCM571 offers all the power of a petrol driven tool without the inconvenience of having to carry / mix fuel. The DCM571 Grass Trimmer / Brush Cutter also benefits from a 38cm Swathe as well as brush blade and adapter allowing it to be used for simple grass cutting or heavy duty clearing work. The DCM571 is part of the 54V XR FLEXVOLT platform which allows you to switch quickly and easily from any other XR FLEXVOLT product. Features High / Low Variable Speed Control: 0 - 5,100 RPM / 0 - 5,600 RPM. Up to 46mins runtime (using DCB547 Battery) Patented Gear Drive: Maintains Cut Speed Under Load Shoulder Strap Included 38cm Cutting .