About this item Suitable for multiple line trimmer models: WG150, WG151, WG151.5, WG152, WG153, WG154, WG155, WG155.5, WG156, WG157, WG160, WG160.1, WG160.2. , , WG16 3, WG165, WG175, WG180. Premium 1.65 mm/3.0 m edger spool line and cap: 8 packs of 3.0 m twisted copolymer nylon resin and synthetic trimmer/edger line, 2 packs trimmer cap. Bendable and flexible so that the line can stretch and cushion upon impact on hard surfaces. With a tensile strength of over 100 pounds, it is 30% more resistant than other brands and lasts longer. The coils have an elliptical, aerodynamic shape. Aerodynamic shape allows for lower drag for more efficient cuts. Product Description 1 .