This 20V straight shaft string trimmer features a 13" cutting swath for increased cutting coverage and an auto-feed head that automatically releases approximately ¼-inch of the line every time you release the trigger for ease of use. The built-in wheels guide the trimmer, creating a beautiful edge around your lawn or walkways. The variable speed trigger provides ultimate user control, from cutting thick grass to more precise trimming around delicate areas. The included 20V battery is compatible with all 20V tools. It is a fantastic 2-in-1 tool that quickly converts to a dedicated edger with its pivoting head 13-inch cutting swath and auto-feed head Straight Shaft String Trimmer Ideal for use in small and medium-sized yards for maximum performance Works with All ™ 20V Batteries