Replacement trimmer head will fit 99% of all gas trimmers including: Ryobi, John Deere, Echo, Stihl, Homelite, Bolens, Weed Eater , Craftsman, Toro, Cub Cadet, Troy Bilt, and Poulan. Easy-to-install, no tools required. Uses easy-to-install .130 precut replacement line, push into the head, it automatically locks into place and is ready-to-use. Refer to model No. 8020 (SKU 705165) for replacement line.