Replacement line for all gas and electric trimmers, including Ryobi, John Deere, Echo, Stihl, Homelite, Bolens, Weedeater, Craftsman, Toro, Cub Cadet, Troy Bilt, Honda, Poulan, Black and Decker, and most other makes Superior wear formulated using the highest quality copolymers to provide maximum line life Outstanding toughness engineered for ultimate impact resistance 5 cutting edges Directional aerodynamics always presents the cutting blade forward Extra clean cutting minimizes browning of cut grass tips Processed to minimize line split and frays 20 to 30% more rigidity for diamond like cutting performance Greater momentum provides higher impact resulting from 10% greater line mass Color coded by diameter size