Enter the RYOBI 40V System with the 40V HP Brushless 15” Carbon Fiber Shaft String Trimmer Kit. 40V HP technology delivers more power than a 25cc gas trimmer. 40V HP technology combines a brushless motor, advanced electronics, and high performance lithium technology to provide more power, runtime, and durability, so you can trim for up to 72 minutes per charge. For added durability, this string trimmer was designed with a carbon fiber shaft and has an adjustable 13” to 15” cut swath to achieve longer runtime and more aggressive cuts. Save time, money, and space with the attachment capability. Transform your string trimmer into a variety of tools, compatible with RYOBI EXPAND-IT attachments and other universal gas attachments to tackle any job around the yard. The REEL EASY+ 3-in-1 bump-feed head allows you to reload line in under 60 seconds. Recharge your 40V 4Ah battery in less than 40 minutes with the included 40V Rapid Charger. Best of all, it is part of the RYOBI 40V system where any 40V battery works with any 40V product. This 40V HP Brushless 15” Carbon Fiber Shaft String Trimmer Kit is backed by the RYOBI 5-Year Manufacturer's Tool Warranty, 3-Year Manufacturer’s Battery Warranty, and includes RY40009 40V HP Brushless Carbon Fiber Shaft EXPAND-IT Power Head, RY15529 Carbon Fiber Straight Shaft String Trimmer Attachment, OP40404 40V 4Ah Lithium Battery, OP406 40V Rapid Charger, Trimmer Accessories, and Operator's Manuals.