DEWALT DCST925B 20V MAX 13" Cordless Li-Ion String Trimmer - Bare Tool, 13 in. cutting swath with 0.080 in. line, Gear drive transmission design that powers through overgrowth, Variable-speed trigger with high/low speed control gives you added power or extended runtime, Lightweight and ergonomic with a balanced design to help you move freely, Part of the 20V MAX system of tools.