The DEWALT DCST970X1 60V MAX* String Trimmer is designed to power through tough overgrowth and withstand everyday heavy-duty usage. It features a high-efficiency brushless motor that maximizes runtime and motor life, and its lightweight and ergonomic design maximizes control and minimizes stress on your arms. This kit includes a FLEXVOLT 20V/60V MAX* battery that powers 60V MAX* tools or it can be backwards compatible to work with 20V MAX* tools.