The Grass Gator light duty replacement trimmer head will fit 99% of all gas trimmers, including Ryobi, John Deere, Echo, Stihl, Homelite, Bolens, Weedeater, Craftsman, Toro, Cub Cadet, Troy Bilt, and Poulan. Designed for light duty gas trimmers with engines of 25 cc. or less. Cuts both grass and weeds. Has tough nylon blades. Easy to install, without tools. Easy to use.