6 models in this file
Choosing Trimmer String That Fits Your Greenworks
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Greenworks has earned widespread popularity in residential lawn care by engineering capable, battery-powered outdoor tools that eliminate the maintenance headaches and exhaust fumes of gasoline engines. When property owners search for green works trimmer string, they are looking to maintain the sharp cutting action, low motor strain, and extended battery runtimes of their cordless string trimmers. Proper string selection is essential because string trimmers spin at thousands of revolutions per minute, meaning the wrong diameter or an incompatible spool can bind the motor, cause excessive friction, or snap repeatedly against turf edges. Just as keeping a clean blade is vital when operating a green works electric lawn mower, feeding your trimmer with the correct line ensures clean cuts that prevent grass tips from tearing and turning brown.
These six trimmer lines and spool assemblies differ primarily by their feed mechanism, core diameter, and manufacturing origin, ranging from pre-wound drop-in cartridges for single and dual-feed 24V auto-feed heads to heavy-duty 0.080-inch and 0.095-inch twisted bulk lines built for high-voltage 40V, 60V, and 80V brushless motors.
The line-up at a glance
Greenworks Trimmer Lines Compared
| Model | Line Diameter | Format and Quantity | Material and Design | Trimmer Compatibility |
|---|---|---|---|---|
| YWTESCH 8 Pack 0.065″-18Ft Dual Line | 0.065 inches | 8 pre-loaded spools (18 ft each) | PA6 nylon with 30% glass fiber | Greenworks dual-line models (2101602, 2101) |
| YWTESCH 0.065″ Single Line Trimmer String | 0.065 inches | Pre-wound drop-in spools | Upgraded nylon polyamide | Greenworks single-line models (21302, 21332, 21342) |
| Eventronic String Trimmer Spool Compatible | 0.065 inches | Pre-assembled spools | Impact-cushioned nylon polyamide | Greenworks cordless models (21342, ST24B215) |
| THTEN 0.080″ Twiste Trimmer Line Replace | 0.080 inches | 9-pack pre-cut coils (157 ft total) | Multi-side flexible twisted cord | Greenworks 24V, 40V, 48V, 60V, 80V cordless and corded |
| Greenworks 0.095″ 5-Pack Pre-Cut Twisted String | 0.095 inches | 5 pre-cut refills (16 ft each) | High-durability aerodynamic twist | Universal fit for heavy-duty string trimmers |
| Greenworks 0.080″ 160-Foot String Trimmer Line | 0.080 inches | 160-foot continuous bulk spool | Patented noise-dampening twist | Most Greenworks corded and cordless trimmers |
No. 1 of 6 · Ywtesch
YWTESCH 8 Pack 0.065″-18Ft Dual Line for Dual-Feed Auto Trimmers
Best for: Greenworks dual-line auto-feed trimmer owners
What the listing says
- FIT FOR GREENWORKS TRIMMER Spool diameter 2.16 inches, height 0.86 inches.
- IMPORTANT PRE-PURCHASE NOTICE This spool is not a universal type; its spool dimensions and center hole size differ from…
- INSTALLATION TIP This is a dual line spool, so it is recommended to pinch both ends of the…
- NEWLY UPGRADED PREMIUM MATERIA YWTESCH weed eater string made of PA6(Nylon) & 30% GF (Glass Fiber).
- PRE-LOADED STRING TRIMMER SPOOLS For home owners who need to use a string trimmer maybe once a week, replacing the…
Pros
- Reinforced PA6 nylon glass fiber
- Pre-wound drop-in dual spool
- Exceeds 100 lb tensile strength
Cons
- Incompatible with single-line heads
- Center hole specific to dual models
The YWTESCH 8 Pack 0.065″-18Ft Dual Line provides an aftermarket replacement pack specifically tailored for Greenworks auto-feed string trimmers equipped with dual-exit cutting heads. Each spool in this multi-pack comes pre-loaded with eighteen feet of 0.065-inch cutting line. The physical spool casing measures 2.16 inches in outer diameter, 0.86 inches in height, and features a 0.43-inch center opening. This specific geometry ensures direct compatibility with Greenworks dual-line auto-feed models including the 2101602 and 2101, allowing operators to bypass the tedious manual winding process.
Durability is a central focus of this replacement string. The line is produced from PA6 nylon reinforced with 30% glass fiber, a composite formulation engineered to elevate hardness, resist heat buildup from rapid spinning, and deliver abrasion resistance with a tensile strength exceeding 100 pounds. When installing this dual-line setup, the manufacturer notes that users should pinch both line ends during the unravelling process so the spool stays organized before seating it inside the trimmer head. Weighing 9.1 ounces across the package, these drop-in refills engage cleanly with the automatic feed mechanism to keep cutting line at an optimal working length.
This 8-pack is best suited for homeowners who run twin-line 24V Greenworks trimmers on regular lawn edging routines and prioritize quick drop-in convenience over spool winding. Because the spool height and center hole differ from single-line models, this pack is not a universal replacement and gives way to single-line spools for single-eyelet trimmers, as well as thicker gauge line for heavy-duty 60V or 80V yard tasks.
No. 2 of 6 · Ywtesch
YWTESCH 0.065″ Single Line Trimmer String for Light-Duty Yard Trimming
8.0/10 Our score
Best for: 24V Greenworks single-line trimmer operators
What the listing says
- Quick Check Please note: This trimmer string replacement spool is specifically engineered for Greenworks single line trimmers.
- Fit for Greenworks Trimmer Spool dimensions: 2.16" diameter, 0.78" height, 0.39" center hole.
- Premium Materials Say goodbye to frequent line breaks.
- Saves Time & Effort Tired of wrestling with tangled line?
- Superior Performance This 0.065" weed trimmer line delivers the perfect balance of flexibility and strength.
Pros
- Pre-wound single-line convenience
- Upgraded nylon polyamide material
- Exceeds 100 lb tensile strength
Cons
- Incompatible with dual-line trimmers
- Not sized for blue spools
The YWTESCH 0.065″ Single Line Trimmer String is designed for owners of Greenworks single-line auto-feed grass trimmers who require quick drop-in replacement spools. Engineered to strict housing tolerances, the spool features a diameter of 2.16 inches, a height of 0.78 inches, and a 0.39-inch center hole. These precise measurements make it compatible with a wide array of Greenworks single-line auto-feed models, including 21302, 21332, 21342, ST24B215, 2100302, STBA24B210, and STBL24B210.
The spool uses an upgraded nylon polyamide material that delivers tensile strength greater than 100 pounds, allowing the 0.065-inch diameter line to withstand high-friction weed trimming around raised stone beds, chain-link fences, and garden borders without premature snapping. Designed as a drop-in ready replacement, it eliminates the frustration of winding tangled bulk line by hand; users simply open the trimmer head cover, insert the spool, thread the line through the eyelet, and snap the cover back in place. The entire package weighs 8.4 ounces and maintains consistent flexibility during high-velocity rotation.
This single-line cartridge is the ideal match for suburban homeowners using 24V Greenworks cordless trimmers for perimeter edging and routine grass cleanup. Because its spool dimensions and center hole differ noticeably from dual-line spools and blue single-line variants, it is not interchangeable across other head designs and yields to twin-feed spools or thicker 0.080-inch lines for denser overgrowth.
No. 3 of 6 · Eventronic
Eventronic String Trimmer Spool Compatible for Quick Single-Line Maintenance
8.2/10 Our score
Best for: Impact-cushioned single-line edging
What the listing says
- Compatibility Note Please carefully verify your trimmer model and ensure it matches the compatible models we provide.
- Fit for Greenworks Trimmer This product is a 0.065" single-line replacement spool.
- High Quality Material Made from an upgraded nylon polyamide material with a tensile strength of over 110 pounds, the…
- Pre-assembled Spools This design reduces the hassle of winding up your mower with traditional line and saves more…
- Trustworthy Eventronic has dedicated years to developing high-quality trimmer line spools, earning the trust of countless customers.
Pros
- Over 110 lb tensile strength
- Impact-cushioning flexible nylon
- Ready-to-use pre-assembled spool
Cons
- Limited to single-line models
- Does not fit dual feeds
The Eventronic String Trimmer Spool Compatible provides an aftermarket solution for operators seeking pre-wound 0.065 trimmer string for greenworks single-line cordless weed eaters. Each pre-assembled spool measures 2.16 inches in diameter, 0.78 inches in height, and has a 0.39-inch center arbor hole. This configuration matches cordless Greenworks trimmers including models 21342, ST24B215, STBA24B210, and STBL24B210, offering a direct swap without requiring manual line assembly.
Eventronic constructs this trimmer line compatible with greenworks using upgraded nylon polyamide with a tensile strength exceeding 110 pounds. The line is engineered to stretch and cushion against hard impacts when brushing against curbs, masonry, and fence posts, which the manufacturer states provides an increase of up to 50% in cutting efficiency compared to standard brittle nylon. Keeping replacement cartridges on hand simplifies yard cleanup after aerating and dethatching turf with a green works dethatcher.
This replacement spool suits weekend gardeners who want dependable impact resistance while trimming lawn edges and navigating tight landscaping borders. While it provides robust tensile strength, the spool dimensions do not fit dual-line trimmer heads or blue single-line models, meaning owners of higher-voltage Greenworks tools with manual bump heads will need to choose heavier bulk line instead.
No. 4 of 6 · Thten
THTEN 0.080″ Twiste Trimmer Line Replace for Multi-Voltage Cordless Edging
9.8/10 Our score
Best for: Multi-voltage Greenworks cordless trimmer users
What the listing says
- Compatible with Greenworks string trimmers all using 0.080" diameter line
- Compatible with Greenworks 80V 60V 48V 40V 24V Cordless String Trimmer：GST80320,STB301,ST80L00,ST80L210,STBA80L210,ST60B212,ST60B02,BL60L00,ST60B01,ST60L210,STBA60B411,STE405,ST48B2210,ST40L412,STF457,ST40L210,2111802,ST40B213,ST40B04,ST24L00,STE302
- Compatible with Greenworks 10 Amp 18" Corded String Trimmer 21142
- Multi-side Cords Slice through heavier weeds and thicker grass quickly and efficiently, Cutting less time
- 9 Pack 157-ft.of 0.080" professional grade twisted line for professional results
- Used for trimming and edging grass
Pros
- Aerodynamic twisted multi-side cord
- Broad voltage compatibility across 24V-80V
- Includes 9 pre-cut coils
Cons
- Requires manual head threading
- Not a drop-in cartridge
The THTEN 0.080″ Twiste Trimmer Line Replace is an aftermarket 9-pack offering 157 total feet of greenworks 0.080 trimmer line designed for multi-voltage cordless and corded Greenworks machines. This multi-pack supports a massive selection of Greenworks string trimmers across 24V, 40V, 48V, 60V, and 80V cordless lines—including popular models like GST80320, STB301, ST80L00, ST80L210, ST60B212, ST60B02, ST40L412, and ST40L210—as well as the 10 Amp 18-inch corded model 21142.
The line features a multi-sided twisted profile engineered from a combination of flexible and impact-resistant materials. The aerodynamic spiral cord slices cleanly through heavier weeds and thicker stalky grass, reducing drag on the electric motor to help preserve cordless battery charge during extended yard work. Each coil comes pre-cut, allowing users to rapidly reload manual-wind or bump-feed trimmer heads without measuring or hauling around large spools. The complete 9-pack package weighs just 1.6 ounces, making it compact to store in tool pouches.
This twisted cord is an outstanding match for landowners and property caretakers who operate 40V, 60V, or 80V Greenworks string trimmers and need line tough enough to handle stubborn weeds, ditch banks, and overgrown fence lines. However, it yields to pre-wound 0.065-inch auto-feed spools for users who have smaller 24V trimmers with closed auto-feed heads that cannot accept 0.080-inch cord.
No. 5 of 6 · Greenworks
Greenworks 0.095″ 5-Pack Pre-Cut Twisted String for Heavy-Duty Clearing
8.2/10 Our score
Best for: Heavy-duty clearing with high-voltage trimmers
What the listing says
- 50% MORE DURABLE – Lasts 50% longer than residential grade string trimmer line
- 15% MORE EFFICIENT – Engineered to provide up to 15% more runtime than standard string trimmer…
- PRE-CUT – Pre-cut string trimmer line for less downtime and faster loading
- UNIVERSAL FIT – Universal fit for use in all string trimmers
- 5 REFILLS – Contains (5) 16-ft coils of 0.095” string trimmer line
Pros
- Genuine Greenworks replacement part
- 50 percent more durable design
- Up to 15 percent more runtime
Cons
- Too thick for 24V trimmers
- Only 5 pre-cut refills
The Greenworks 0.095″ 5-Pack Pre-Cut Twisted String represents the brand’s genuine factory-engineered solution for high-demand trimming applications. This package contains five separate 16-foot coils of genuine greenworks 0.095 pre-cut trimmer line finished in the company’s trademark green color. Sized at 0.095 inches in diameter, this line is engineered for universal compatibility with string trimmer heads that accommodate heavier commercial-grade cutting line.
Built for severe duty, this line lasts up to 50% longer than standard residential-grade trimmer lines. Greenworks engineered the twisted aerodynamic profile to provide up to 15% more runtime on cordless platforms compared to conventional round line, as the aerodynamic spiraling generates noticeably less drag and turbulence at high rotational speeds. The pre-cut 16-foot lengths significantly reduce yard downtime, letting operators reload their rapid-load or bump-feed heads immediately without scissors or tape measures.
This 0.095-inch pre-cut line is best suited for property owners operating high-powered 60V and 80V Greenworks string trimmers who frequently encounter thick brush, thistle, brambles, and dense field grass. It is not suitable for entry-level 24V or small 40V trimmers that are limited to 0.065-inch or 0.080-inch line, where the increased mass and diameter would strain the motor.
No. 6 of 6 · Greenworks
Greenworks 0.080″ 160-Foot String Trimmer Line for Continuous Bulk Reloading
8.8/10 Our score
Best for: Continuous spool winding for medium-duty trimming
What the listing says
- 160 feet of line
- Patented twist design provides less drag, less noise and less vibration
- Compatible with most Greenworks corded and cordless string trimmers
- Genuine Greenworks replacement part
Pros
- 160 feet genuine Greenworks bulk line
- Patented drag-reducing twist profile
- Reduces trimmer noise and vibration
Cons
- Requires manual spool winding
- Single continuous bulk roll
The Greenworks 0.080″ 160-Foot String Trimmer Line is an authentic OEM bulk spool manufactured directly by Greenworks. Supplying a generous 160 feet of 0.080-inch gray trimmer line on a single spool, it is compatible with most Greenworks corded and cordless string trimmers designed for 0.080-inch line. The compact spool measures 6.1 by 6.1 inches and weighs 5.92 ounces, making it an efficient staple for property maintenance.
Featuring a patented twisted design, this genuine greenworks trimmer line reduces drag against ambient air, dampens high-frequency buzzing noise, and cuts down on shaft vibration during operation. The balanced twist helps preserve battery runtime on 40V, 60V, and 80V trimmers while maintaining sharp slicing power against dense turf. Stashing a bulk spool on your garage shelf guarantees that you are prepared for seasonal cleanup projects throughout the year, just as you would prepare for winter clearing with a green works electric snow shovel cordless.
This bulk line is ideal for property owners who prefer spooling their own trimmer heads to custom lengths rather than purchasing individual disposable cartridges. It offers tremendous overall yard mileage for routine trimming, though users who prioritize instant tool-free reloading will prefer a pre-wound greenworks replacement spool, while those clearing woody weeds will want the thicker 0.095-inch line.
Before you choose
How to Choose the Right Greenworks Trimmer Lines
Deciding which greenworks trimmer line to buy begins with checking the motor voltage and head type of your specific trimmer. Line diameter must align with your tool’s power rating. Compact 24V string trimmers are engineered exclusively for 0.065-inch line, where lightweight filament keeps motor revolutions high and prevents battery drain. Stepping up to mid-tier 40V tools generally calls for 0.080-inch line, providing the extra strength required for thicker lawn perimeters. Heavy-duty 60V and 80V commercial-grade trimmers possess the torque necessary to spin 0.095-inch line through dense weeds and woody overgrowth without bogging down.
Understanding the difference between pre-wound drop-in spools and bulk trimmer string is equally critical for efficient yard work. Pre-wound spools, such as those from YWTESCH and Eventronic, provide instant replacement convenience for automatic feed trimmer heads. You simply snap the cartridge into the housing and feed the line through the eyelet. In contrast, bulk line spools like the Greenworks 160-foot roll provide continuous material that you measure and wind manually, offering lower material waste. Pre-cut options like the THTEN 9-pack or Greenworks 5-pack strike a practical balance by supplying ready-to-load segments without requiring measuring tools.
Spool geometry is an area where buyers frequently make mistakes. Spools for single-line trimmers and dual-line trimmers are not interchangeable. Single-line heads use spools with a 0.78-inch height and a 0.39-inch center arbor hole, while dual-line heads require a taller 0.86-inch spool with a wider 0.43-inch center opening. Furthermore, standard black replacement spools do not share the dimensions of blue-spool Greenworks trimmers. Always inspect the model label located on your trimmer shaft or motor housing before ordering.
Finally, line profile plays an active role in cutting efficiency and battery conservation. Standard round trimmer string can create excess wind resistance and vibration as it slices through the air. Twisted and multi-sided cords, such as the patented profiles found on Greenworks OEM and THTEN lines, feature aerodynamic spirals that slice through air with less friction. This reduced drag dampens trimmer noise, lowers operational vibration in your hands, and preserves valuable battery runtime across cordless systems.
Questions people ask
FAQ
Can I use 0.095 line in a 24V Greenworks string trimmer?
No, you should not install 0.095-inch trimmer line in a 24V Greenworks tool. Lower-voltage trimmers are engineered with compact motors and tight eyelet clearances designed specifically for 0.065-inch line. Attempting to run 0.095-inch cord will cause severe line feeding issues, drag down the motor RPM, generate extreme heat, and rapidly drain your 24V battery.
What is the difference between single line and dual line Greenworks replacement spools?
Single-line spools feed a single cutting strand through one eyelet and feature a spool height of 0.78 inches with a 0.39-inch center hole. Dual-line spools hold two separate line tracks feeding through opposing eyelets, measuring 0.86 inches in height with a 0.43-inch center hole. Because of these distinct physical dimensions and arbor mount sizes, single-line and dual-line spools cannot be swapped.
Are third-party trimmer lines compatible with Greenworks trimmers?
Yes, aftermarket brands such as YWTESCH and Eventronic manufacture pre-wound spools specifically engineered to match the internal dimensions and auto-feed mechanisms of Greenworks trimmers. Similarly, third-party bulk lines like THTEN fit Greenworks manual bump-feed heads as long as the line diameter matches the trimmer’s rated specification.
How does a twisted line design increase cordless trimmer runtime?
A twisted trimmer line features a spiral aerodynamic contour that reduces air resistance as the cutting head rotates at high speeds. Lower aerodynamic drag allows the electric motor to maintain its target cutting speed using less electrical current, which can extend cordless battery runtime by up to 15% while also dampening operating noise.
Where can I find the model number on my Greenworks trimmer?
The model number for your trimmer is printed on a manufacturer specification label. This sticker is typically attached directly to the motor housing near the handle or placed along the lower aluminum shaft just above the trimmer head shield. Confirming this number guarantees you select the correct replacement spool or line diameter.
Prices, specifications and the feature lines above are read from the product listing and can change without notice. Scores are out of 10, based on listed specifications and buyer feedback; nothing on this page is written from handling the product.
