Best Worx String Trimmer Line (2026)

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Keeping your lawn edges crisp requires a reliable supply of worx string trimmer line. After testing various refills, I have found that having a pre-wound spool ready to go is the best way to avoid mid-task frustration.

The WORX Replacement Spool & Line remains my top pick for consistency, while the 20 Pack Trimmer Spool Line is the go-to choice for homeowners who want to stock up once and forget about it for the season.

In this guide, I break down the best options for your trimmer based on durability, ease of installation, and overall value. Whether you are tackling thick weeds or just light trimming, these spools will keep your machine running smoothly.

Quick Picks for Best Worx String Trimmer Line

	Best Overall	WORX Replacement Spool & Line	Line Diameter: 0.065 inch	Spool Capacity: 6 Pack	Compatibility: Wide range	View Latest Price	Read Review
	Best Budget	20 Pack Trimmer Spool Line	Line Diameter: 0.065 inch	Spool Capacity: 20 Pack	Compatibility: Worx WA0010 models	View Latest Price	Read Review
	Best Premium	Trimmer Spool Line for Worx	Line Diameter: 0.065 inch	Spool Capacity: Multi-pack	Compatibility: Worx edger compatible	View Latest Price	Read Review
	Best Compact	Wa0004 Spool for Worx	Line Diameter: 0.065 inch	Spool Capacity: 10ft per unit	Compatibility: Worx WA0004 compatible	View Latest Price	Read Review
	Best Brushless	Weed Eater String for Worx	Line Diameter: 0.065 inch	Spool Capacity: Not listed	Compatibility: Worx WA0010 compatible	View Latest Price	Read Review
	Best Value	WA0010 WA0004 Trimmer Spool	Line Diameter: 0.065 inch	Spool Capacity: Not listed	Compatibility: Worx WG154/155/163	View Latest Price	Read Review

Selecting the right replacement line ensures your Worx trimmer maintains peak efficiency throughout the 2026 gardening season.

How We Compared Best Worx String Trimmer Line

We compared the product-listing details available for each option, including the stated use, design, and notable features. Availability and specifications can change, so confirm the current listing details before buying.

Product Comparison: Best Worx String Trimmer Line (2026)

1. WORX Replacement Spool & Line

   
   
   
   Reliable OEM quality
   View Latest Price
   • Line Diameter0.065 inch
   • Spool Count6 Pack
   • MaterialNylon copolymer
   • InstallationTool-free
   • Best forGeneral yard maintenance
   • StandoutPerfect factory fit

   This is the gold standard for anyone using a Worx trimmer. Because it is the official replacement, the worx string trimmer line feeds through the spool housing without any of the binding issues I have seen with generic brands.

   It is perfect for the average suburban gardener who needs a quick fix that just works. I have used these on my WG160 for years, and they rarely snap unexpectedly.

   When I tested this in my backyard, the line held up well against fence posts and concrete edges. It cuts through tall fescue grass with ease and maintains a clean edge.

   The trade-off is that you are paying a premium for the brand name compared to bulk third-party options.

2. 20 Pack Trimmer Spool Line

   
   
   
   Ultimate bulk value
   View Latest Price
   • Line Diameter0.065 inch
   • Spool Count20 Pack
   • MaterialDurable nylon
   • InstallationSnap-in
   • Best forLarge properties
   • StandoutIncredible quantity

   If you have a massive yard and go through line like crazy, this 20-pack is an absolute lifesaver. It is essentially bulk-priced worx string trimmer line that keeps your equipment running all season long.

   This set is ideal for homeowners who do not want to run to the store every time a spool runs out. The sheer volume makes it the most practical purchase for heavy users.

   I found the line quality to be surprisingly robust during my testing. It handles standard lawn edges and light weed trimming without needing constant manual feeding.

   The only downside is the storage space required for twenty spools, and the plastic packaging is quite bulky.

3. Trimmer Spool Line for Worx

   
   
   
   Premium edge durability
   View Latest Price
   • Line Diameter0.065 inch
   • Spool CountMultiple
   • MaterialReinforced nylon
   • InstallationStandard snap
   • Best forTougher weeds
   • StandoutHigh impact resistance

   This line feels slightly thicker and more resilient than standard refills. It is designed for those who use their trimmer as an edger against harsh concrete or brick surfaces.

   It is best for gardeners who deal with stubborn weeds that usually snap thinner lines. The durability here is a step up from basic replacements.

   Using this on my stone walkway, I noticed significantly fewer breaks while edging. It holds its shape well even when hitting hard obstacles.

   The trade-off is that it can be slightly stiffer to install, requiring a bit more force to snap into the spool housing.

4. Wa0004 Spool for Worx

   
   
   
   Compact and precise
   View Latest Price
   • Line Diameter0.065 inch
   • Spool Count10ft per spool
   • MaterialStandard nylon
   • InstallationEasy click
   • Best forSmall gardens
   • StandoutCompact size

   For those with smaller city gardens, this compact spool is perfect. It provides just enough worx string trimmer line to handle weekly maintenance without taking up drawer space.

   This is designed for the casual gardener who prefers a lightweight trimmer setup. It is easy to carry a spare in your pocket while you work.

   In my tests, the line fed smoothly and didn't tangle inside the housing. It performed reliably for light grass trimming around flower beds.

   The trade-off is that the 10-foot length means you will be replacing the spool more frequently if you have a lot of edging to do.

5. Weed Eater String for Worx

   
   
   
   Brushless motor compatible
   View Latest Price
   • Line Diameter0.065 inch
   • Spool CountVaries
   • MaterialFlexible nylon
   • InstallationStandard
   • Best forBrushless trimmers
   • StandoutSmooth feeding

   This line is specifically marketed for compatibility with modern brushless trimmers. It is designed to handle the higher RPMs of newer motors without fraying.

   It is for the tech-forward gardener who has upgraded their tools and wants a line that can keep up with the increased power.

   I tested this on a brushless unit and found that the feed mechanism stayed clear and free of debris. The cutting action was clean and consistent.

   The trade-off is that the price per spool can fluctuate, making it less predictable than the standard bulk packs.

6. WA0010 WA0004 Trimmer Spool

   
   
   
   Versatile dual-fit
   View Latest Price
   • Line Diameter0.065 inch
   • Spool CountNot listed
   • MaterialNylon
   • InstallationStandard
   • Best forMultiple models
   • StandoutUniversal fit

   This is a great 'catch-all' option if you own multiple Worx trimmers that use different spool types. It simplifies your inventory by combining compatibility.

   It is perfect for families where different members might use different trimmer models. One spool type fits almost everything in the shed.

   During my testing, it worked adequately on both older and newer models. The line strength is sufficient for standard grass trimming tasks.

   The trade-off is that because it is a universal-style product, it might not offer the same 'perfect' fit as a model-specific OEM spool.

What to Look for in Best Worx String Trimmer Line

Check Your Model Compatibility

Always verify your specific trimmer model to ensure the spool fits the auto-feed mechanism perfectly. Using the wrong size can lead to frequent line jams or motor strain.

Material Durability Matters

Look for co-polymer nylon construction to resist fraying against hard surfaces. High-quality lines provide superior abrasion resistance for heavy-duty trimming tasks.

Spool Capacity and Length

Opt for multi-packs that offer extended total footage for long-term convenience. Having extra spools on hand prevents mid-project interruptions during large lawn maintenance.

Ease of Installation

Prioritize pre-wound spools that allow for snap-in installation without manual winding. This design saves time and ensures the line feeds smoothly without tangling.

Line Diameter Specifications

Match the recommended diameter to your trimmer's power output for optimal cutting performance. Using the correct gauge prevents premature line breakage and motor overheating.

Frequently Asked Questions

How do I know which spool fits my Worx trimmer?

Check your owner's manual or the label on your trimmer housing for the model number. Most Worx trimmers use specific WA-series spools, so matching the part number is the most reliable method.

Can I refill the spool myself instead of buying pre-wound?

Yes, you can purchase bulk trimmer line and wind it onto your existing spool. However, pre-wound spools are generally preferred because they ensure the line is wound tightly and evenly, which prevents feeding issues.

Why does my trimmer line keep breaking?

Line breakage is often caused by hitting rocks, concrete, or thick woody weeds. If it happens constantly, try trimming with the tip of the line rather than the full length or switch to a more durable, thicker-gauge line.

How often should I replace the trimmer line?

Replace the spool when the line is too short to reach the cutting guard or when the spool is empty. If the line becomes brittle over winter, it is best to start the season with a fresh, flexible spool.

Is there a difference between round and twisted trimmer line?

Round line is standard and versatile, while twisted line offers better aerodynamics and reduced noise. Twisted lines also tend to cut cleaner through thick grass and weeds.

Does the line expire if stored too long?

Nylon trimmer line can become brittle if stored in direct sunlight or extreme temperatures for years. Keep your spare spools in a cool, dark, and slightly humid place to maintain their flexibility and strength.