Upgrade your Challenge strimmer with a reliable Replacement Trimmer Line Spool Cover Kit designed for the N1F GT250 and GT350 series. This premium‑quality twin‑feed set includes two 1.3 mm line spools (each delivering 3.5 m of cutting line) and a durable replacement cap, so you’re ready for any overgrown garden patch.
Key Benefits
– Dual‑feed compatibility – fits both the GT250‑B and GT350‑B models without modification.
– Long‑lasting line – 1.3 mm diameter provides strong cutting power for grass, weeds, and light brush.
– Easy installation – the cap snaps on securely; spools slide into place with a simple twist.
– Versatile color options – lines arrive in either white or orange, depending on stock.
Specs at a glance
– Spool diameter: ~49 mm | Hole: ~21 mm | Height (no knob): ~18 mm
– Cap diameter: ~69 mm | Cap hole: ~28 mm | Height (no grooves): ~30 mm
– Spring length: ~55 mm, outer diameter: ~12 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 smoothly—swap out worn line and caps quickly with this all‑in‑one kit and enjoy hassle‑free mowing every season.





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