Don't let your garden overgrow! Prevent any unexpected interruptions to your grass-trimming regime by keeping a spare FLY021 Double Autofeed Spool & Line. Top Tip: Changing your line at the start of the season makes trimming the garden easier. All trimmer line degrades over time and using new line offers greater flexibility and resilience, which results in less line breakages. Delicate trimmer lines naturally can become worn or dulled, or even split after striking rocks or hard surfaces, making keeping a spare just good preparation. This genuine replacement;FLY021 Double Autofeed Spool & Line is perfect in keeping your trimmer performing at full capacity. Please check model fit list to ensure this part is correct for your model.