Upgrade your Challenge strimmer with a reliable Replacement Trimmer Line Spool Cover Kit designed for the N1Fβ―GT250 and GT350 series. This premiumβquality twinβfeed set includes two 1.3β―mm line spools (each delivering 3.5β―m of cutting line) and a durable replacement cap, so youβre ready for any overgrown garden patch.
Key Benefits
– Dualβfeed compatibility β fits both the GT250βB and GT350βB models without modification.
– Longβlasting line β 1.3β―mm diameter provides strong cutting power for grass, weeds, and light brush.
– Easy installation β the cap snaps on securely; spools slide into place with a simple twist.
– Versatile color options β lines arrive in either white or orange, depending on stock.
Specs at a glance
– Spool diameter: ~49β―mm | Hole: ~21β―mm | Height (no knob): ~18β―mm
– Cap diameter: ~69β―mm | Cap hole: ~28β―mm | Height (no grooves): ~30β―mm
– Spring length: ~55β―mm, outer diameter: ~12β―mm
All dimensions are approximate and serve as a guide for fitting your machine. This kit is a direct replacement for the original Challenge parts but is not manufactured by the brand, ensuring you get quality performance at a better price.
Keep your trimmer running smoothlyβswap out worn line and caps quickly with this allβinβone kit and enjoy hassleβfree mowing every season.





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