The DEWALT DCMST561 XR Brushless String Trimmer with automatic spool reloaded, its quick load spool allows for fast and easy line replacement. Quickly clears large areas, the variable speed trigger offers precise power control, as well as performance and run time management. With an innovative folding hinge mechanism that reduces the length by 40% for accessible storage and quick portability. Brushless motor gear drive design, providing more torque and maintaining cut speed under load. Specification Line Cutting Speed 0-4,600/0-6,000/min. Cutting Width 36cm Line Diameter 2mm The DEWALT DCMST561P1 XR Brushless String Trimmer is supplied with 1 x 18V 5.0Ah Li-ion Battery 1 x Charger