Worx Weed Eater String Lineup: Fast Model and Spool Comparison

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Selecting the right worx weedeater string requires matching your specific grass trimmer to the precise line gauge, spool housing shape, and feed mechanism designed for that tool head. Trimmer line is not universally compatible across power platforms. Cordless and electric trimmers depend on balanced line weight and aerodynamic profiling to sustain motor speed, protect battery life, and cleanly cut turf without overheating the drive shaft. Using an incompatible spool or line diameter frequently causes autofeed jamming, rapid line snapping, or improper cap fitment.

The Worx trimmer line catalog is organized primarily by tool operating voltage and motor duty cycle. Compact 20V and 32V cordless tools predominantly rely on the WA0010 spool design, which uses 0.065-inch aerodynamic twisted or DoubleHelix monofilament to minimize motor drag. Corded electric models utilize the WA0007 format designed for longer continuous runs, while heavy-duty 40V and dedicated high-output trimmers require the WA0014 spool loaded with thicker 0.080-inch line. Third-party options expand the standard WA0010 layout into high-quantity replacement sets and glass-fiber reinforced blends. This worx string trimmer line comparison details each option so you can determine exactly which worx string trimmer line to buy for your yard equipment.

Criteria matrix What each model in this report is credited with

Rows are the criteria that come up in the pros and cons listed for this lineup. A check means the criterion is named in this report’s write-up of that model; a dash means it is not. Criteria that apply to every model, or to only one, are left out because they separate nothing.

Criterion	WORX Replacement Spool & 8.6/10	15	20 Pack Trimmer Spool 8.4/10	Trimmer Spool Line for 9.0/10	WORX Replacement Spool & Line 8.6/10	WORX Replacement Spool & Line (6) 9.6/10
Spools	✓Named	✓Named	✓Named	✓Named	✓Named	Not named
Pre-wound	✓Named	Not named	✓Named	✓Named	Not named	✓Named
Trimmers	✓Named	Not named	✓Named	Not named	✓Named	✓Named
Tensile strength	✓Named	Not named	Not named	✓Named	✓Named	Not named
DoubleHelix	✓Named	Not named	Not named	Not named	✓Named	✓Named
Package	✓Named	Not named	✓Named	Not named	✓Named	Not named
Replacement caps	✓Named	Not named	✓Named	Not named	Not named	Not named
Lbs tensile	✓Named	Not named	✓Named	Not named	Not named	Not named
Criteria named	8 / 8	1 / 8	6 / 8	3 / 8	5 / 8	3 / 8

Built from the wording of this report, not from a bench test. A dash is not a fault: it only means the write-up does not mention that point for that model. Scores next to each model are out of 10, based on listed specifications and buyer feedback.

Worx String Trimmer Lines Lineup at a Glance

The Models in Detail

WORX Replacement Spool & Line

Best for: Tough brush on high-power trimmers

Pros

• Heavy 0.080 inch line
• 20-foot spool length
• Reduces high-drag bogging

Cons

• Single spool per package
• Incompatible with standard 20V trimmers

Best for: Owners of corded electric Worx trimmers

Pros

• 16 feet per spool
• OEM DoubleHelix design
• Over 100 lbs tensile strength

Cons

• Only 2 spools per pack
• Incompatible with 20V trimmers

Best for: Suburban homeowners wanting original OEM spools

Pros

• Aerodynamic DNA2 shape
• Over 100 lbs tensile strength
• Pre-wound factory fit

Cons

• Only 6 spools per pack
• No replacement caps included

The authentic OEM WORX Replacement Spool & Line WA0010 package provides six factory-wound spools loaded with patented DNA2 DoubleHelix cutting line. Each individual spool holds 10 feet of 0.065-inch monofilament, providing a combined 60 feet of cutting line across the bundle. Worx molds this worx doublehelix line with an oval, aerodynamic cross-section that decreases air resistance during high-speed spinning. The copolymer nylon formulation yields over 100 pounds of tensile strength, allowing the thin line to resist rapid wear when contacting sidewalk edges, concrete pads, and garden walls.

Because each spool arrives pre-wound directly from the manufacturer, setup requires simply pressing the spool into the trimmer housing without measuring or manual spooling. This worx wa0010 replacement spool layout is engineered to fit more than 25 distinct Worx 20V and 32V cordless trimmer models, as well as select 40V models in the tool line. If your primary yard tool is a lightweight cordless model like the worx weed wacker, this factory spool provides optimal spool tension, smooth autofeed cycling, and reliable motor speed.

This model is best suited for homeowners who prioritize original equipment manufacturing tolerances and dependable feeding over aftermarket bulk volume. It provides the standard baseline experience intended by the tool designers. However, property owners with large fence lines who use dozens of spools each summer may find that higher-quantity replacement kits offer longer-lasting seasonal inventory.

15

The 15 pack manufactured by YWTESCH provides a high-volume supply of replacement spools built to the WA0010 interface standard. Spooled with 0.065-inch polyamide nylon monofilament, this alternative utilizes centrifugal force and an aerodynamic twisted geometry to cut cleanly while reducing aerodynamic drag on the tool motor. The twisted profile also helps reduce trimmer vibration levels and operational cutting noise compared to standard round line designs.

Compatibility extends across an extensive list of Worx cordless models, including the WG122, WG150, WG151, WG151.5, WG152, WG153, WG154, WG155, WG155.5, WG156, WG157, WG160, WG160.1, WG160.2, WG160.3, WG160.4, WG162, WG163, WG165, WG166, WG166.1, WG167, WG170, WG170.1, WG170.2, WG170.3, WG175, WG175.1, and WG180. The spool bodies use impact-resistant materials engineered to endure high rotational speeds. The flexible polyamide nylon thread is pliable, cushioning impact shocks against hard obstacles to prevent line snapping inside the eyelet.

This 15-pack suits homeowners with expansive yards or overgrown perimeters who burn through trimmer line quickly and need an abundant worx weed wacker string refill. While it delivers significant replacement volume, the listing does not state the exact linear footage wound onto each spool. It also lacks replacement spool caps, meaning users with worn or cracked cover plates should consider bundles that bundle replacement hardware.

20 Pack Trimmer Spool Line

Best for: Edging along abrasive fences and rocks

Pros

• 110 lbs tensile strength
• Glass-fiber reinforced nylon
• 11 feet per spool

Cons

• Only 2 caps included
• Third-party brand

Best for: Users needing spools and replacement caps

Pros

• Includes 4 replacement caps
• 16 pre-wound spools
• Flexible polyamide line

Cons

• Line footage unlisted
• Third-party brand

The 20 Pack Trimmer Spool Line from YWTESCH is an expanded maintenance bundle containing 16 pre-wound trimmer line spools alongside four replacement retaining caps. Each spool uses 0.065-inch polyamide nylon string featuring a twisted aerodynamic profile. The twisted line structure provides multiple cutting surfaces for cleaner grass slicing while reducing high-speed air resistance and trimming head vibration.

This package shares universal compatibility with the standard WA0010 trimmer lineup, serving models WG122, WG150, WG151, WG152, WG153, WG154, WG155, WG156, WG157, WG160, WG162, WG163, WG165, WG166, WG167, WG170, WG175, and WG180. The integrated automatic feeding system relies on head centrifugal force to advance fresh line automatically during operation, removing the hassle of stopping work to adjust the line manually. The listing highlights the inclusion of four dedicated trimmer caps, providing essential replacement hardware when the original plastic tabs wear smooth.

This kit is ideal for owners of older Worx trimmers whose original spool caps have cracked, scuffed through, or lost their retention clips from ground friction. Having spare caps ensures ongoing operation without buying separate parts. However, for property owners tackling thick, woody stems or dense briars, standard polyamide nylon lines give way to specialty glass-reinforced cutting line variants.

Trimmer Spool Line for Worx WA0010

The LEIMO KPARTS Trimmer Spool Line for Worx WA0010 is a reinforced 14-piece maintenance kit containing 12 pre-wound spools and two spare retention caps. Built as an upgraded replacement for WA0010 and part number 50006531, each spool contains 11 feet of 0.065-inch line made from PA6-GF30 glass-fiber reinforced nylon. The manufacturer states that this composite material delivers 110 pounds of tensile strength compared to 68 pounds in baseline copolymer lines, extending abrasion wear resistance by 35 percent in standardized testing.

Compatibility covers major Worx 20V and 32V units, including the WG150, WG151, WG152, WG153, WG154, WG155, WG156, WG157, WG160, WG163, WG165, WG175, and WG180. The oval aerodynamic cross-section reduces motor drag, maximizing battery runtime when clearing dense lawn borders. Each production batch undergoes tensile strength, heat tolerance, and UV degradation testing prior to packaging to ensure the line retains elasticity when stored in unheated garages. If you need a reliable supply of worx weed string that can handle rough masonry, this reinforced material provides extra durability.

This setup is designed for property owners who frequently edge along rough stone walls, chain-link fences, and decorative rock beds where standard nylon lines quickly fray. The extra foot of line per spool also extends the interval between spool changes. However, if your equipment is a heavy-duty 40V or electric machine designed for a different spool profile, this compact WA0010 spool pattern will not latch into the tool spindle.

WORX Replacement Spool & Line

The factory OEM WORX Replacement Spool & Line WA0007 is a dedicated two-pack replacement spool designed for select Worx corded electric grass trimmers. Each package contains two orange spools loaded with 16 feet of line, providing 32 total feet of material. This spool format is directly interchangeable with manufacturer part number 50022833. It features the patented DoubleHelix DNALINE2 oval aerodynamic shape molded from copolymer nylon resin and synthetic compounds.

The WA0007 trimmer line is tailored specifically for Worx corded electric models including the WG108, WG109, WG112, WG113, WG116, WG119, WG120, WG173, and WG183 series. The listing states that this aerodynamic profile reduces line drag and increases edging working life by up to 25 percent compared to standard baseline round profiles under standard operating conditions. With over 100 pounds of tensile strength, the line flexes and cushions impact against hard surfaces to prevent breakage at the eyelet.

This model is built strictly for owners of the specified WG100-series corded trimmers and WG183 machines. Because its physical spool dimensions (2 inches by 5 inches) and locking mechanism differ completely from the WA0010 format, it cannot be mounted in standard 20V cordless trimmers like the WG163. If your yard setup uses high-output cordless trimmers requiring heavier cord, this light-duty spool yields to the larger WA0014 series.

WORX Replacement Spool & Line

The heavy-duty WORX Replacement Spool & Line WA0014 is engineered for high-output Worx trimmers requiring a larger line diameter. This single-pack spool comes pre-wound with 20 feet of 0.080-inch helix-design cutting filament composed of copolymer nylon resin and synthetic materials. Built for larger powerheads, the thicker 0.080-inch line delivers the cutting mass required to slice through heavy weed patches, dense overgrowth, and thick stalk borders without snapping.

The WA0014 spool is compatible exclusively with heavy-duty Worx series trimmers and edgers, specifically models WG168, WG184, WG190, and WG191. Like other factory lines, it features the DoubleHelix DNALINE2 oval aerodynamic profile, which cuts down air resistance to conserve tool motor power and maximize cordless runtime. The pliable nylon resin lets the 0.080-inch line stretch and cushion shock upon impact with landscape rocks, curbing, and wooden posts.

This spool is the required choice for users running powerful 40V or dual-battery Worx platforms who find that standard 0.065-inch line breaks too easily in heavy underbrush. Its thicker diameter provides aggressive cutting power for tough clearing work. However, this spool is physically too large to fit standard 20V trimmers, making trimmer model verification necessary before ordering.

Matching a Model to Your Setup

• For standard Worx 20V trimmers like the WG163, the WORX Replacement Spool & Line (WA0010) offers factory-wound DNA2 line that preserves motor runtime and guarantees seamless autofeed cycling.
• For property owners managing large lawn perimeters, the 15 pack provides an economical inventory of 0.065-inch twisted polyamide spools to prevent mid-season shortages.
• For tools with cracked or worn spool covers, the 20 Pack Trimmer Spool Line provides 16 WA0010 spools along with four replacement head caps to restore proper spool retention.
• For trimming alongside rough chain-link fences and concrete pavers, the Trimmer Spool Line for Worx WA0010 delivers reinforced PA6-GF30 glass-fiber line with 110 pounds of tensile resistance.
• For corded electric trimmers such as the WG119 or WG120, the WORX Replacement Spool & Line (WA0007) provides the exact 16-foot factory spool dimensions required for the tool spindle.
• For high-output 40V trimmers tackling thick brush, the WORX Replacement Spool & Line (WA0014) provides the necessary 0.080-inch heavy-gauge line to power through woody growth.

Before You Buy

Before purchasing replacement trimmer spools, check the exact model number stamped on your trimmer motor housing or battery cradle. Worx uses different spool geometries across its product generations, meaning that spools designed for the WA0010 footprint cannot fit trimmers built for the WA0007 or WA0014 platforms. The product listings do not specify universal interchangeability between these distinct lines, and forcing the wrong spool into your trimmer head will cause line feed failures, broken drive tabs, or lost spool covers.

Additionally, standard spool replacement kits do not include internal motor drive components, head return springs, or replacement eyelets. If your tool fails to feed line due to an unseated internal spring or stripped spindle teeth, installing a fresh spool will not resolve the problem. While gardeners may also operate alternative equipment like a hyper tough weedeater or commercial platforms from a husqvarna weed wacker range, Worx spools use proprietary locking lugs that do not interchange with other tool brands. Confirm your specific trimmer model number before ordering.

FAQ

Which Worx string trimmer line to buy for a standard 20V cordless model?

Most Worx 20V trimmers, including popular models like the WG163, WG170, and WG180, use the WA0010 spool pattern loaded with 0.065-inch line. Homeowners seeking original factory performance should choose the WORX Replacement Spool & Line (WA0010) six-pack, while those needing bulk quantities can choose compatible 15-pack or 20-pack alternatives.

What is the difference between Worx WA0010, WA0007, and WA0014 spools?

The primary differences lie in physical spool dimensions, line diameter, and trimmer compatibility. The WA0010 carries 10 feet of 0.065-inch line for compact 20V and 32V cordless tools. The WA0007 holds 16 feet of line for corded electric trimmers like the WG119. The WA0014 holds 20 feet of thicker 0.080-inch line designed for heavy-duty 40V models like the WG168 and WG184.

How does the Worx DoubleHelix line improve cutting performance?

The Worx DoubleHelix line utilizes an oval, twisted aerodynamic profile. This shape cuts down wind resistance against the spinning trimmer head, which allows the electric motor to sustain higher rotational speeds while drawing less battery power, extending runtime on cordless tools.

Can I put 0.080-inch line on a trimmer designed for 0.065-inch line?

No, you should not put 0.080-inch line into a trimmer built for 0.065-inch line. Thicker line creates excessive aerodynamic drag that overheats smaller 20V motors, drains batteries rapidly, and jams inside the narrow automatic feed eyelets.

Do third-party compatible spools feed properly in Worx trimmers?

Third-party spools built to the WA0010 specification utilize the same centrifugal autofeed dynamics as factory spools. They advance line automatically as centrifugal force acts on the spool during operation. Always verify that the spool cap clicks securely over the spool to ensure proper line release.