As a part of the PowerCommand Family of tools, the Black+Decker 20V MAX Lithium Easy Feed String Trimmer/Edger (LSTE525) is engineered to help solve common user frustrations. Features include EasyFeed line advancement with the touch of a button and PowerDrive Transmission for increases torque for more cutting power at the string. It has 20V of Li-Ion power, and easily converts between a trimmer and a wheeled edger as needed.