The 40V Attachment Capable Power Head delivers more power than a 25cc gas string trimmer, making it a true gas replacement without the hassle of gas. Save money, time, and space with attachment capability and transform your power head into a variety of tools. This power head is compatible with RYOBI EXPAND-IT attachments and other universal attachments to take on any job around the yard. Achieve maximum control when completing your tasks with the variable speed trigger. Best of all, it is part of the RYOBI 40V system where any 40V battery works with any 40V product. This 40V Attachment Capable Power Head Kit is backed by the RYOBI 5-Year Manufacturer's Tool Warranty, 3-Year Manufacturer’s Battery Warranty, and includes RY40PH01 40V Power Head, OP40404 40V 4Ah Battery, OP404 40V Charger, Front Handle, and Operator’s Manuals.