The Worx 20V Grass Trimmer/Edger is the easy-to-use, no fuss string trimmer that offers the ultimate in both convenience and functionality. It switches from a trimmer to an edger in just seconds, which saves you from buying a 2nd tool. It?s cordless, so you won?t get snagged on bushes and trees as you work around the yard. It?s cleaner and more cost-effective than gas-powered trimmers. Yet it provides more than enough power to give your lawn clean lines and straight edges. This tool comes with one 20V 1.5 Ah MaxLithium battery and a charger. That?s the very same battery that powers our chainsaws, even our lawnmowers. A 10? cutting diameter is wide enough to trim larger patches, but narrow enough to dart around garden edges and other landscaping features. The 10? spool that comes in this kit is wound with 0.065? diameter DoubleHelix DNA Line2. That?s not your average trimmer string. This patented oval-shaped design is aerodynamically engineered to reduce drag and slice through grass, and it features a tensile strength of over 100 lbs, so it resists snapping. This robust, user-friendly 2-in-1 will let you get more done in less time. And its lightweight, ergonomic design means almost anyone can take it out and help with the yard work.