Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Buy the spool that matches the model number stamped on your trimmer’s cap, not one labeled “fits all Worx.” Most replacement line disappoints for a simple reason: the spool is wound with the wrong diameter string or the plastic hub is slightly too tight, so the auto-feed jams mid-lawn. This guide sorts real Worx-compatible spools by model coverage, line thickness, and how much string you get per pack.
This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Your trimmer model number is the single fact that decides which spool you can use, so check it before you read another listing. Below you will find the exact model lists, line diameters, and pack counts for the worx weed eater parts that fit real machines.
Top Picks
How To Choose Worx Weed Eater Parts
A Worx string trimmer does not take a universal spool. Each model family feeds a specific spool number, and getting it wrong means the line either won’t advance or won’t sit flush under the cap. The good news is that the model list is printed on nearly every listing, so matching is a two-minute job if you know where to look.
Match the spool number to your trimmer, not the brand
WA0010 and WA0004 spools cover the widest spread of Worx trimmers — the WG150 through WG180 family. If your trimmer is a corded electric model like the WG116, WG119, WG173, or WG183, you need the WA0007 spool instead. The WA0014 spool goes with the heavier WG168, WG184, WG190, and WG191 machines and carries thicker 0.080″ line. Read your trimmer’s cap or manual before ordering anything.
String diameter changes how the spool behaves
The 0.065″ line is the thin, general-purpose string for grass and light weeds. The 0.080″ line on the WA0014 spool is thicker and aimed at the more powerful trimmers it fits. Putting the wrong diameter in a trimmer built for the other can cause feed problems. It also affects how the line cuts — thin line slices tender growth, thicker line holds up better against tougher stems.
Count the line per spool, then count the spools per pack
Line length per spool ranges from 10ft to 16ft to 20ft across these packs, and pack sizes run from 7 up to 20 pieces. A longer line per spool means fewer swaps during a job. A bigger pack means fewer reorders per season. Both matter, but if your trimmer eats line fast, the length per spool is the number that saves you the most time.
Side-by-Side Comparison
| Model | Best For | Line Diameter | Line Length | Pack Contents | Amazon |
|---|---|---|---|---|---|
| WA0004 Spool 16+4 Pack★ Best Overall | Widest WA0010/WA0004 model coverage | 0.065″ | 10ft | 16 spools + 4 caps | Amazon |
| Eyoloty WA0010 SpoolMost Model Coverage | Value multi-pack with long model list | 0.065″ | 10ft | 10 spools | Amazon |
| VOSOIR 20 Pack WA0010 | Biggest spool count with four caps | 0.065″ | 10ft | 16 spools + 4 caps | Amazon |
| CZON WA0007 7-Pack | Corded WG116/WG119/WG173/WG183 trimmers | 0.065″ | 16ft | 6 spools + 1 cap | Amazon |
| LEIMO KPARTS WA0010 14 Pack | Reinforced line for heavy seasonal cutting | 0.065″ | 11ft | 12 spools + 2 caps | Amazon |
| THTEN WA0014 Spool | WG168/WG184/WG190/WG191 heavy trimmers | 0.080″ | 20ft | Spools with WA0037 fit | Amazon |
Detailed Reviews
1. WA0004 Spool for Worx
Our pick — 4.5+★ from 700+ verified ratings; the strongest balance of quality and price.
Sixteen wound spools plus four fresh caps — the refill that keeps a whole season covered.
This is the pack to buy if you want one order to cover both your string and your spool caps. You get 16 pre-wound spools, each carrying 10ft of 0.065″ nylon line, plus 4 replacement spool caps. Caps are the part that quietly goes missing or cracks, so having spares in the same box is genuinely useful rather than filler.
Model coverage is where this pack pulls ahead. The listing names WA0010, WA0004, and cap model WA6531 GT, and the trimmer list runs from WG150 through WG180 — including the WG151.5, WG155.5, WG160.2, and WG163 variants that some cheaper packs skip. The spool is ABS plastic wound with 0.065″ nylon, and the maker claims its elliptical shape cuts drag and raises cutting efficiency by 50%. That figure comes from the maker, so treat it as a claim rather than a measurement.
The honest catch is line life. Durability gets mixed feedback — several buyers report the line breaking quickly, which is the classic trade-off of thin 0.065″ string against thick stems. Fit and function draw far more praise than breakage complaints, so this is a case of choosing the right tool for the job: tender grass and light weeds are fine, woody brush is not. For the sheer amount of string and caps you get in one box, this is the pick that suits most Worx owners.
What earns the top spot
- 16 spools and 4 caps in a single order — string and caps both covered
- Model list spans WA0010, WA0004, and cap WA6531 GT, with trimmers from WG150 to WG180
- 10ft of 0.065″ nylon per spool, pre-wound so there is no hand-winding
- Elliptical spool shape reduces drag and cushions impact, per the maker
Where it asks patience
- Thin 0.065″ line reports breakage against tough growth
- Best suited to grass and light weeds, not heavy brush
Reach for this if: you own a WG150-WG180 trimmer and want string plus spare caps handled in one order.
Look elsewhere if: your trimming is mostly thick, woody stems — the 0.065″ line is the weak link there.
2. WA0010 Trimmer Spool
The compatibility list that reads like the whole Worx catalogue.
If you have ever stared at a listing wondering whether your trimmer is on it, this is the pack that likely answers yes. The model list covers WG122, WG150 through WG157, WG160 through WG167 with the.1 and.2 sub-variants, and WG170 through WG180. That is wider than most rivals, including the WA0004 pack, and it is the reason this spool stands out before you even look at the string.
Each spool arrives pre-wound with 10ft of 0.065″ nylon, and the DNA2 DoubleHelix line carries an aerodynamic shape for reduced drag and a sharper cutting edge for both trimming and edging. The whole set weighs just 2.4 ounces, which tells you how compact these spools are — a handful fits in a back pocket. Value is the standout: buyers talk about getting good value from the pack, and the ten-spool count stretches a season further than a small starter set.
Line life is the honest caveat. Durability feedback is mixed, with breakage showing up in the reports — normal for thin 0.065″ string pushed through tough growth. Against the 20-pack VOSOIR, this one gives you fewer spools but a longer model list, so pick by your trimmer, not by the count. For a Worx owner whose model sits on that long list and who wants edging-capable line, this is a smart, straightforward buy.
Compatibility wins the day: the WG122-through-WG180 list is the longest in this lineup, so most Worx owners will find their machine on it.
Where it demands care: mixed durability reports mean you should keep spares on hand rather than run out mid-job.
Pick it when: your trimmer model appears on the extensive compatibility list and you want line built for edging too.
Think twice when: you need the maximum number of spools — the 20-pack options give you more per purchase.
3. 20 Pack WA0010 Spool
The heavyweight box: 16 spools, 4 caps, and line rated over 100 lbs of pull.
The VOSOIR pack is built around surviving hard work. The 0.065″ line is upgraded polyamide nylon on an ABS spool, rated by the maker at over 100 lbs of tensile strength — the pull it takes before snapping. The maker also claims 50% better abrasion resistance than standard line and 30% higher cutting efficiency from the spool’s drag-cutting aerodynamic shape. Those are maker figures, not test results you can verify, but the direction is right: this is line aimed at fewer mid-job replacements.
Where it separates from the 16-pack Anleolife is the cap count. Both boxes hold 16 spools, but this one puts 4 WA6531 spool covers in with them, which is double the Anleolife’s single cap. Model coverage runs WG150 through WG180 including the WG151.5, WG155.5, WG160.1, and WG160.2 variants. Each spool is pre-wound at 10ft of 0.065″ line and feeds by centrifugal force, so changing one takes seconds rather than a rewinding session.
Feedback points to the same thin-line reality as the rest of the 0.065″ group: breakage, tangling, and feed hesitation come up, and the honest read is that this string is for grass and light weeds, not brambles. Against the Eyoloty pack this one wins on spool count and caps, while the Eyoloty edges it on model-list length. For a homeowner who wants the biggest single box of refills plus caps to spare, this is the practical choice.
The case for this box
- 16 spools and 4 caps — double the cap count of the Anleolife pack
- Maker rates the polyamide line at over 100 lbs tensile strength
- Pre-wound 10ft spools feed by centrifugal force, no hand-winding
- Covers WG150 through WG180, including WG160.1 and WG160.2 variants
What to expect honestly
- Thin 0.065″ line breaks under tough growth
- Tangling and feed hesitation show up in feedback
- Tensile and abrasion figures are maker claims, not laboratory results you can check
Suits you if: you want the most spools and caps in one order for a WG150-WG180 trimmer.
Not your pick if: your yard is mostly thick brush — step up to thicker line instead.
4. WA0007 Trimmer Spool
The one pack for corded Worx trimmers — 16ft of line where most offer 10ft.
Most of this list feeds the cordless WG150-WG180 family. This pack does not. It is the WA0007 / 50022833 spool, built for corded electric models WG105, WG106, WG108, WG109, WG112, WG113, WG115, WG116, WG117, WG118, WG119, WG124, WG173, and WG183. If your trimmer plugs into a wall, this is the spool that actually fits, and none of the WA0010 packs will work in its place.
Each spool carries 16ft of 0.065″ polyamide nylon on a high-quality ABS hub. That is more line per spool than the 10ft packs in this lineup — against the WA0004’s 10ft, this one runs 16ft, so you are changing spools less often on a long job. CNC machine cutting and winding keeps the feed even, and the aerodynamic shape trims drag for cleaner passes. Fit is the clear strength here, with buyers confirming it seats properly and restrings a Worx trimmer without fuss.
The instructions matter more than usual: wear goggles and long pants because line can fly, switch the trimmer off before changing or removing the spool, and use it only on tender grass — tough weeds call for blades. Durability feedback is mixed and tangling comes up, so treat this as line for regular lawn upkeep rather than heavy clearing. For a corded Worx owner, it is the correct spool rather than a compromise.
What it does best: a 16ft spool of 0.065″ line that fits a model group the WA0010 packs cannot touch.
The honest limit: maker says tender grass only, and mixed durability reports mean heavy brush is not its job.
Your spool if: you run a corded WG116, WG119, WG173, or WG183 trimmer.
Wrong turn if: you own a cordless WG150-WG180 — you need the WA0010 spool instead.
5. WA0010 Trimmer Spool 14 Pack
Glass-fiber reinforced line for people tired of re-stringing every other weekend.
The LEIMO KPARTS pack takes the materials angle further than anyone else here. Its 0.065″ line is PA6-GF30 glass-fiber reinforced nylon, rated by the maker at 110 lbs tensile strength against 68 lbs for standard copolymer line. On paper that is a 42-lb gap, and the maker backs it with a 35% longer wear life claim from side-by-side abrasion testing. The line is extruded to a ±0.002 inch tolerance, so the diameter holds up under high-speed spin instead of thinning at the eyelet and snapping.
Model coverage runs WG150 through WG180, matching the WA0010 family the top pick serves. What is different: each spool carries 11ft of 0.065″ line rather than 10ft, and there are 12 spools plus 2 caps in the box. Auto-feed by centrifugal force means the string advances on its own as you trim. The maker says every batch is tested for tensile strength, heat tolerance, and UV stability before shipping — unverified, but aimed at line that survives a season in the sun.
This is the premium option for a reason: the reinforced line is the upgrade, and you pay for that longevity in materials rather than in a bigger spool count. If plain 0.065″ line keeps breaking on you, the reinforced nylon is the fix worth trying over simply buying more of the same. For seasonal cutting where line wear is your main frustration, this is the box that addresses it.
Where the upgrade shows
- PA6-GF30 glass-fiber reinforced nylon, rated 110 lbs tensile vs 68 lbs standard
- Maker claims 35% longer wear life from abrasion testing
- ±0.002 inch diameter tolerance holds true under high-speed rotation
- 11ft per spool and 12 spools plus 2 caps in the box
What you give up
- Fewer spools than the 16-spool value packs, at a higher tier
- Reinforced-line figures are maker claims, not independent test results
Made for you if: line breakage is your main frustration and you want the reinforced-nylon fix rather than more of the same string.
Overkill if: a standard WA0010 spool has never given you trouble.
6. WA0014 Trimmer Spool
Thicker 0.080″ line and 20ft per spool for the bigger Worx machines.
This spool is built for Worx’s heavier units — WG168, WG184, WG190, or WG191 — and it is the only pack here with 0.080″ line instead of 0.065″. It also fits original spool model WA0037. The thicker string handles a more powerful trimmer: 0.080″ line takes more load than thin string without thinning out, and each spool holds 20ft, the longest line length per spool of any pack here.
The 0.080″ line is pliable enough to cushion impacts on patios and driveways, and the maker claims edging life up to 25% longer than normal. Fit is what buyers talk about most, with owners confirming it seats properly in the machines it names. That fit matters more on this spool than the others, because the WA0014 system is a smaller family and a wrong-fit spool will not feed at all.
This is the pick where matching the model is non-negotiable. Compatibility feedback is mixed, with WG184 fit coming up as a specific trouble spot, and auto-feed and durability reports are not all glowing — the line can jam and break like any string line. Check your model against the short list before ordering, and buy it for the thicker line and the 20ft spools rather than assuming it fits every Worx trimmer out there.
What makes it different: the only 0.080″ spool here, with 20ft per spool — more line and a thicker diameter than the 0.065″ packs.
Read before you buy: it fits only WG168, WG184, WG190, and WG191, and WG184 fit draws mixed reports, so confirm your model first.
Built for: owners of a WG168, WG184, WG190, or WG191 who want thicker 0.080″ line and 20ft per spool.
Steer clear if: you run a WA0010-family trimmer — this spool will not fit your head.
Know the Specs
Line diameter — the number that decides feed and breakage
Line diameter is the thickness of the nylon string, written like 0.065″ or 0.080″. The thin 0.065″ string suits grass and light weeds and is what most WA0010 and WA0007 spools carry. The thicker 0.080″ line on the WA0014 spool holds up better on larger trimmers, but it only feeds properly in machines built for it. Putting the wrong diameter in a trimmer is a common cause of jamming or snapping, so match the diameter to your model rather than picking whichever looks sturdier.
Auto-feed by centrifugal force — why you stop hand-winding
An auto-feed spool holds the wound line under a cap and lets the spinning head pull fresh string out as it spins — that spin is the centrifugal force. You bump or the head turns, and the line advances to the cutting length. It removes the old chore of pulling string out and rewinding by hand. Every spool in this lineup is pre-wound and auto-feed, which is why the listings emphasize easy installation and quick swaps.
Spool count vs line length — two different kinds of value
A pack can give you lots of spools with 10ft each, or fewer spools with more line per spool. The WA0007 pack runs 16ft per spool where the WA0004 runs 10ft, and the WA0014 runs 20ft. More line per spool means fewer swaps during one mowing session. More spools per pack means fewer reorders over a season. Decide which frustration you want to remove, then buy toward it.
The spool cap — the small part that gets lost
The cap sits over the spool and holds the line in place while the head spins. A cracked or missing cap lets the string flop loose and stops the feed working. Cap models include WA6531 and WA6531 GT, and packs here include anywhere from zero to four spares. The top pick and the 20-pack both ship four caps, which is note if your original cap is already showing wear.
Common Questions
How do I know which Worx spool my trimmer takes?
Will a 0.065″ spool work in a trimmer that uses 0.080″ line?
What does auto-feed mean on a Worx trimmer spool?
Why does my trimmer line keep breaking?
Is the spool cap included in every pack?
Can I use WA0010 spools in a corded Worx trimmer?
How long does a pre-wound spool last?
Is reinforced nylon line actually better than standard line?
Can I trim tough weeds with a 0.065″ spool?
What should I check before changing a spool?
The Bottom Line
For most Worx owners, the worx weed eater parts winner is the WA0004 16+4 pack because it covers the widest WA0010/WA0004 trimmer range and ships four spare caps with 16 pre-wound spools. If you want the most spools and caps in one box, grab the VOSOIR 20-pack. And for a corded trimmer like the WG116 or WG119, the CZON WA0007 pack is the one to reach for, with 16ft per spool. Whichever you choose, match the spool number to your trimmer first — that single check saves more frustration than any feature on this list.
How we choose
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of November 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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