1. APPLICABLE MODELS Replaceable line spool fit for WORX WG150E, WG151E, WG154E, WG155E, WG157E, WG160E, WG163E, WG165E, WG166E, WG1617E, WG1617E.2. HIGH EFFICIENCY Pliable and flexible allowing for the line to stretch and cushion on impact with hard surfaces, provides more efficient cutting.3. GOOD DURABILITY Lawn mower spool, selected high quality plastic and nylon materials, durable, wear resistant, not easy to break, and long service life.4. LAWN MOWER ACCESSORY Exquisite craftsmanship and high accuracy help to provide the best performance and effectively extend the service life of the machine.5. EASY ASSEMBLY Lawn mower line spool replacement, with high compatibility, can directly replace old or damaged parts and improve cutting efficiency.