The RYOBI ONE+ HP Brushless 15" Attachment Capable String Trimmer is a true gas replacement, delivering more power than a 21cc gas string trimmer. Achieve over 40 minutes of runtime using an 18V 4Ah battery to tackle your entire yard (battery not included). RYOBI 18V ONE+ HP Technology delivers more power, runtime, durability and speed utilizing brushless motors, advanced electronics and HIGH PERFORMANCE lithium technology. Save money, time, & space with attachment capability & transform your string trimmer into a variety of tools – compatible with RYOBI EXPAND-IT attachments & other universal attachments. As part of the Whisper Series, it’s 89% quieter than gas, so you can cut any time of day. Get to work quickly by reaching full throttle in under 1 second for instant power. An integrated sliding guard lets you to adjust the cut swath between 13”-15” to easily optimize for runtime or performance. Achieve maximum control with the variable speed trigger & easily change the speed with the 2 speed switch. The REEL EASY+ bump-feed head allows you to reload line quickly without any disassembly. This trimmer is compatible with RYOBI LINK™ Wall Storage (Wall Rails sold separately) for convenient storing and access. Best of all, it is part of the RYOBI ONE+ system where any 18V ONE+ battery works with any 18V ONE+ product. The RYOBI 18V ONE+ 15" String Trimmer is backed by the RYOBI 3-Year Manufacturer's Warranty. Battery and charger sold separately.