The 40V 15" String Trimmer Kit delivers more power than a 25cc gas string trimmer, making it a true gas replacement without the hassle of gas. With just the pull of a trigger, trim for 1 hour using a 40V 4Ah battery. Save money, time, and space with attachment capability and transform your string trimmer into a variety of tools. This trimmer is compatible with RYOBI EXPAND-IT attachments & other universal attachments to take on any job around the yard. Trim weeds & grass with the adjustable 13" to 15" cut swath. A larger cut swath will give you maximum performance while a smaller cut swath gives you maximum runtime. This trimmer is equipped with a variable speed trigger to achieve maximum control when trimming along fences, mailboxes, and flower beds. Conveniently reload your .080" line in under 60 seconds with the REEL EASY+ SPEED WINDER bump feed head. Best of all, it is part of the RYOBI 40V system where any 40V battery works with any 40V product. This 40V 15" String Trimmer Kit is backed by the RYOBI 5-Y