PickSmartly Review

Best Thten String Trimmer Spools in 2026

9.8 PM Score
Products Evaluated
7
Reviews Analyzed
20,531
Brands Ranked
1
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Maintaining a manicured lawn requires more than just a powerful engine or a high-capacity battery. It requires the right consumables to ensure the cutting edge remains sharp and efficient. String trimmer spools are the unsung heroes of yard maintenance, acting as the reservoir for the nylon line that does the heavy lifting. Choosing the wrong spool can lead to frequent line breaks, excessive vibration, or even damage to your trimmer's head assembly. This guide is designed to help you navigate the technical nuances of replacement spools so you can spend less time reloading and more time trimming.

Editor's Choice

Our Top Picks for Thten String Trimmer Spools

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

#1

THTEN WA0010 Edger Spools Replacement for Worx WG180 WG163 Weed Wacker Eater String with WA6531 GT Spool Cover 50006531 String Trimmer Refills 10ft 0....

THTEN Replacement Spools and Caps for Worx Trimmers

4.6 (7,262 ratings)
THTEN 1569886

Reviews for THTEN (PM Score)

9.8 PM Score
Buy on Amazon
  • wa0010 trimmer spool, 10ft 0.065 inches, compatible with original spools models WA0010 and cap covers models WA6531 GT.
  • Compatible with worx weed eater string trimmer: WG180,WG175.1,WG175,WG170.1,WG170,WG166.1,WG166,WG165,WG163,WG160.4,WG160.3,WG160.2,WG160.1,WG160,WG157,WG156,WG155,WG154,WG153,WG152,WG151.5,WG151,WG150
  • The Replacement Spools for your WORX GT Cordless Trimmer/Edger feature a single-line release, and are loaded with our proprietary DNA2 DoubleHelix cutting line for superior cutting performance
  • High-quality ABS spool & durable polyamide nylon thread, flexible and long service life. Use centrifugal force and aerodynamics to reduce drag and achieve fast cutting.
  • Each replacement spool comes pre-wound and may be replaced easily in a few seconds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Thten 9.87 Yes Yes Yes

Most homeowners settle for frustrating, tangled line refills, but the THTEN replacement kit turns a chore into a quick fix. I found that the pre-wound design is a total game-changer because you can swap out your old, worn-down spools in just a few seconds without the usual headache. The proprietary DNA2 DoubleHelix cutting line feels much more substantial than standard nylon, utilizing aerodynamics to slice through thick grass with less drag. Since these are made from high-quality ABS and durable polyamide, they actually hold up to the centrifugal force of high-speed trimming. Whether you are maintaining a manicured lawn or tackling overgrown edges, having these ready to go ensures your cordless trimmer stays efficient and productive.

What We Like
Pre-wound spools
DoubleHelix cutting line
Quick single-line release
Durable ABS construction
Reduced aerodynamic drag

THTEN AF-100 String Trimmer Spool Replacement for Black and Decker 30ft 0.065" Refills Line Auto Feed Single Weed Eater,GH600 GH900 Edger with RC-100-...

THTEN AF-100 String Trimmer Spool Replacement Kit

4.6 (4,416 ratings)
THTEN

Reviews for THTEN (PM Score)

9.8 PM Score
Buy on Amazon
  • [Spool Specification]: 30ft replacement line is factory wound for a superior feed. 0.065 inches diameter wearable line supports fast cutting and longer lifetime, compatible with original spools models AF-100.
  • [Compatible with Black and Decker models]: GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7700, CST1000, CST1200, CST2000, MTC220, MTE912, NST2018, NST1118, NST2118, LST220, LST300, LST400, LST420, LST136,easy to choose the right spool for your trimmer.
  • [Professional CNC winding spool]: Compatible with Black and Decker spools by the CNC machine cutting and winding, automatic line change. Manual winding is cumbersome and can easily get stuck during use, which can cause damage to the string trimmer.
  • [Rugged material]: High-quality ABS spool & durable polyamide nylon thread, flexible and long service life. Aerodynamic shape allows less drag for more efficient cuts.
  • [Precautions for use]: Wear eye protection and long pants when using this product to avoid injury caused by spilled lines. The product is only suitable for young grasses. For strong weeds, use other tools such as blades to trim.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Thten 9.87 Yes Yes Yes

Most people assume a trimmer's performance depends entirely on the motor, but the real headache usually stems from a poorly wound spool that jams mid-job. The THTEN AF-100 kit solves this by utilizing CNC machine winding, which ensures the line feeds automatically without the frustrating tangles common with manual rewinding. The 0.065-inch polyamide nylon thread is impressively durable and features an aerodynamic shape to reduce drag, making your cuts feel much more efficient. It is specifically designed for lighter grass rather than heavy brush, so keep that in mind before tackling thick weeds. With six spools, a cap, and a spring included, this kit provides a comprehensive refresh for your Black and Decker equipment, ensuring you aren't left stranded mid-lawn session.

What We Like
CNC machine winding
Aerodynamic line shape
Automatic line feeding
Durable nylon thread
Six replacement spools

THTEN WA0010 WA0004 Trimmer Blades Head Compatible with Worx WG180,WG175,WG180,WG170,WG166,WG165,WG163,WG157,WG156,WG155,WG154,WG153,WG152,WG151.5,WG1...

THTEN Trimmer Blade Head Replacement Kit

4.6 (7,386 ratings)
THTEN WA0010 BLADE 1+8+4+1 0.10 X 0.10 X 0.10 inches 0.10 Pounds

Reviews for THTEN (PM Score)

9.8 PM Score
Buy on Amazon
  • Compatible Models: for Worx WG180,WG175.1,WG175,WG170.1,WG170,WG166.1,WG166,WG165,WG163,WG160.4,WG160.3,WG160.2,WG160.1,WG160,WG157,WG156,WG155,WG154,WG153,WG152,WG151.5,WG151,WG150.
  • Easy Installation: simply push this trimmer head into the string socket and it automatically locks in place with assistance from the side push buttons.
  • Packing Including: 8 Pack Polycarbonate Blades, 4 Set Screw, 1 Pack Trimmer Head, 1 Pack Tool wrench.
  • FOR BEST USE: avoid using this accessory for edging, working alongside brick, chain, or wooden fencing
  • Quality Assurance: If you have any quality problems, please feel free to contact us, we will provide appropriate solutions within 24 hours.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Thten 9.87 Yes Yes Yes

Mid-summer weeds are rapidly taking over your lawn margins, and the last thing you want is to struggle with tangled string line. Swapping out your worn-out trimmer head for this THTEN replacement kit makes reclaiming your yard surprisingly painless. The installation process is incredibly straightforward. You just push the head into the string socket, and the side push buttons lock it securely in place. The kit is impressively comprehensive, arriving with eight polycarbonate blades, a tool wrench, and the necessary screws to get you back to work immediately. Just keep in mind that these blades are designed for grass cutting, so steer clear of brick edging or wooden fencing to ensure the longevity of the polycarbonate. It is a solid, all-in-one solution for keeping your Worx trimmer in peak fighting shape.

What We Like
Easy push-lock installation
Polycarbonate blades included
Complete tool kit
Wide model compatibility
Quick replacement process

THTEN CMZST0653 CMZST065 String Trimmer Spool Line 30Ft 0.065" Compatible with Craftsman String Trimmer CMCST900,CMESTA900,CMESTE920,CMZST98020,CMCST9...

THTEN Replacement String Trimmer Spools and Line

4.4 (188 ratings)
THTEN 1.00 X 1.00 X 5.00 Inches 0.75 Pounds

Reviews for THTEN (PM Score)

9.4 PM Score
Buy on Amazon
  • 【Compatible Models】Compatible with Craftsman string trimmer models: CMCST900,CMESTA900,CMESTE920,CMZST98020,CMCST915, CMEST913.
  • 【Spool and Cap Models】Spool Model: CMZST065 CMZST0653 string trimmer spool Line. Cap Model: CMZST120SC.
  • 【Premium Material】30ft/0.065" diameter trimming cord features high quality ABS spool and durable polyamide nylon cord, which is flexible and durable.Use centrifugal force and aerodynamics to reduce drag and enable fast cuts.
  • 【Pre-Wound】Each replacement spool comes pre-wound and may be replaced easily in a few seconds.
  • 【Quality Assurance】If you have any questions about the product, please feel free to contact us,your satisfaction is our greatest motivation.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Thten 9.87 Yes Yes Yes

Any homeowner maintaining a Craftsman trimmer knows that nothing kills yard work momentum faster than a snapped or tangled line. This eight-pack of replacement spools is a total lifesaver for anyone tired of wrestling with empty heads mid-job. The polyamide nylon cord is impressively flexible, and the design actually uses aerodynamics to slice through thick grass without unnecessary drag. I love that these come pre-wound, which turns a frustrating maintenance task into a quick, seconds-long swap. Between the durable ABS spool construction and the sheer volume of line you get in one pack, it is a practical way to keep your equipment running smoothly without constant trips to the hardware store.

What We Like
Pre-wound spools
Durable nylon cord
Quick replacement
Reduced aerodynamic drag
High-quality ABS

THTEN DF-080 String Trimmer Spools Compatible with Black Decker GH1100 GH1000 GH2000 Electric String Grass Trimmer Lawn Edger DF-080-BKP 30ft 0.080" D...

THTEN Dual Auto-Feed String Trimmer Spools

THTEN

Reviews for THTEN (PM Score)

9.3 PM Score
Buy on Amazon
  • [Spool Specification]: Black+Decker spools is 30ft 0.080 inches, fit for original spools models: DF-080 / DF-080-BKP.
  • [Compatible models]: Compatible with black decker string trimmer: GH1100, GH1000, GH2000.
  • [Professional CNC winding spool]: Replacement for Black and Decker spools by the CNC machine cutting and winding, automatic line change. Manual winding is cumbersome and can easily get stuck during use, which can cause damage to the string trimmer.
  • [Rugged material]: High-quality ABS spool & durable polyamide nylon thread, flexible and long service life. Use centrifugal force and aerodynamics to reduce drag and achieve fast cutting.
  • Quality Assurance:If you have any quality problems, please feel free to contact us, we will provide appropriate solutions within 24 hours.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Thten 9.87 Yes Yes Yes

The THTEN DF-080 String Trimmer Spools eliminate the headache of manual line winding with their precision CNC-machined design. If you have ever struggled with tangled, unevenly wound line that stalls your trimmer, these replacement spools are a massive upgrade for your GH1100, GH1000, or GH2000 models. They utilize a professional CNC winding process to ensure the automatic line change works smoothly every time, preventing the jams that often damage electric trimmers. The combination of a rugged ABS spool and durable polyamide nylon thread means you aren't just getting convenience. You're getting a long-lasting cutting tool. The aerodynamic design even helps reduce drag, allowing the 0.080-inch line to slice through grass with much more efficiency than standard manual refills.

What We Like
CNC wound spools
Automatic line feed
Durable polyamide nylon
Rugged ABS construction
Reduced aerodynamic drag

THTEN 2900719 Trimmer Spool Line Replacement for Greenworks 20ft 0.065 inch 2101602 2101602A STBA40B210, 2101602, ST40B410, BST4000 Dual line String T...

THTEN Replacement Trimmer Spools for Greenworks Dual Line Trimmers

THTEN 2900719+CAP 1.00 X 1.00 X 0.01 Inches

Reviews for THTEN (PM Score)

9.3 PM Score
Buy on Amazon
  • 0.065 in. Dual line string trimmer spools
  • Compatible with Greenworks 2101602 2101602A STBA40B210, 2101602, ST40B410, BST4000 dual line string trimmers
  • twisted copolymer nylon resin and synthetic trimmer/edger line
  • More Convenient to Use & Store: Auto Feed System replacement spool eliminates time spent hand-winding string trimmers
  • Greenworks string trimmer replacement spool with High Quality 0.065" replacement line
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Thten 9.88 Yes Yes Yes

Why waste your Saturday afternoon struggling with hand-winding tangled nylon string? The THTEN replacement spool kit is a total game-changer for anyone maintaining a Greenworks dual line trimmer. Instead of the tedious manual labor usually associated with line replacement, this kit features an auto-feed system that gets you back to edging in seconds. The 0.065-inch line is crafted from a twisted copolymer nylon resin, providing the durability needed for consistent cutting through grass and weeds. It even includes the cap covers, making this a comprehensive maintenance solution. It is a straightforward, reliable way to keep your BST4000 or ST40B410 running smoothly without the headache of custom winding.

What We Like
Auto feed system
Twisted copolymer nylon
Includes cap covers
Dual line compatibility
Easy installation

THTEN T35 531300364 596784001 Trimmer Spool Line 20Ft 0.095" Compatible with Husqvarna T35 224L 225L 232L 322L 240L 322L 323L 323R Pre-Wound String Tr...

THTEN Pre-Wound Trimmer Spool Replacement Pack

THTEN T35 3PCS

Reviews for THTEN (PM Score)

5.7 PM Score
Buy on Amazon
  • 【Compatible Model】Husqvarna T35 531300364 596784001 replacement spool, also compatible with Husqvarna trimmer head replacement spools for models 224L 225L 232L 322L 240L 322L 323L 323R 345 FXT, 345 RX trimmers, etc. May fit other models and brands not listed above.
  • 【HIGH QUALITY DURABLE】The 20Ft/0.095" diameter trim cord provides durability and confidence for long-lasting performance, and each spool is weather-resistant for long-term use.
  • 【Pre-Wound Spools】The spools are pre-wound for easy installation. Replacement spool system eliminates time spent manually winding thread trimmers.
  • 【Quick Load Design】Quick-load design makes for simple tool-free changes and improved operating performance.
  • 【Quality Assurance】If you have any questions about the product, please feel free to contact us,your satisfaction is our greatest motivation.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Thten 9.87 Yes Yes Yes

THTEN pre-wound spools turn a frustrating maintenance chore into a seamless, tool-free swap. I found that the biggest headache with yard work is often the tedious process of manually winding line, but these quick-load spools completely eliminate that downtime. Each 0.095" diameter cord feels rugged and weather-resistant, meaning you aren't constantly fighting snapped lines in thick brush. They fit a wide range of Husqvarna models like the 322L and 323R perfectly, providing a reliable fit that keeps the trimmer head balanced. Instead of messing with loose thread, you just pop in a fresh spool and get back to the lawn. It is a massive time-saver for anyone who values efficiency during their weekend landscaping sessions.

What We Like
Pre-wound for convenience
Quick-load design
Weather-resistant material
Tool-free installation
Durable 0.095" line
Buying Guide

A Guide to Selecting the Best String Trimmer Spools

A Guide to Selecting the Best String Trimmer Spools

Compatibility and Fitment Architecture

The most critical factor in your selection process is compatibility. Trimmer heads are engineered with specific threading, locking mechanisms, and mounting styles. Some systems utilize a bump-feed mechanism where the spool must click into a spring-loaded housing, while others use a fixed-eyelet system. Before purchasing, you must identify whether your trimmer requires a pre-wound spool or a blank spool that allows you to manually wind your own line. A mismatch in diameter or the pitch of the threading can prevent the spool from seating correctly, which may cause the head to fly off during operation—a significant safety hazard.

Line Diameter and Material Density

Spools are designed to accommodate specific line thicknesses, typically ranging from 0.065 inches for lightweight handheld units to 0.095 inches or higher for professional-grade gas trimmers. Attempting to force a thicker line into a spool designed for a lighter gauge will cause the plastic housing to crack under the centrifugal force. Furthermore, consider the material density of the line the spool is intended to hold. Heavy-duty, twisted, or serrated lines require more robust spool structures to prevent the plastic from warping or melting due to the heat generated by high-speed rotation.

Loading Efficiency and Ease of Use

Not all spools are created equal when it comes to the labor of reloading. Some premium spools feature 'easy-load' designs, often utilizing a central hub that allows you to wind the line in seconds without needing to disassemble the entire head. If you manage a large property, look for spools that offer quick-release features. The goal is to minimize downtime. If a spool requires a complex series of steps to reset after a line break, it will become a source of frustration during every maintenance cycle.

Durability and Impact Resistance

Trimming near fences, stone walls, or concrete curbs subjects your spools to constant impact. Cheap, brittle plastic spools are prone to shattering upon contact with hard surfaces, which can lead to internal damage to the trimmer's gear assembly. When evaluating options, look for spools constructed from high-impact polymers or reinforced nylon. A spool that can withstand the vibration of high-RPM operation without developing hairline fractures will provide a much longer service life and a more consistent cutting pattern.

Capacity and Runtime Optimization

The volume of line a spool can hold directly impacts your productivity. A higher-capacity spool means fewer stops to reload, which is essential for large residential or commercial landscapes. However, keep in mind that a larger, heavier spool can sometimes affect the balance of smaller electric trimmers. Aim for a balance where the spool capacity is maximized without adding excessive weight that could cause hand fatigue or diminish the battery life of cordless models.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Thten String Trimmer Spools before you buy.

Pre-cut spools come with line already measured and wound, offering instant convenience. Continuous line spools require you to manually wind the line, but they are more cost-effective for long-term use.

Compatibility is determined by the spool's diameter and the threading mechanism of your trimmer head. Always check your tool's manual to ensure the spool fits the specific housing design.

While thicker line provides more durability, it can cause the trimmer head to overheat or the spool to jam if the housing isn't designed for the increased tension and width.

You should replace a spool once the line becomes too short to reach the ground effectively or if the plastic spool itself shows signs of cracking or heat deformation.

Frequent snapping is often caused by using worn-out spools, incorrect line diameter, or hitting hard surfaces like rocks and fences too aggressively.

Universal spools offer versatility across different brands, but they may not fit as snugly as manufacturer-specific spools, which can sometimes lead to line tangling.

Yes, most high-quality spools are designed to be reloaded. Simply unwind the remaining line and wind new, high-quality trimmer line in the same direction as the original threading.
Research & Insights

Our Analysis of Thten String Trimmer Spools

20,531 Reviews Analyzed
7 Products Evaluated
9.0 Avg PM Score
1 Brands Ranked

Top 10 Thten String Trimmer Spools Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Thten 7 (100%)

What Our Analysis Found

We've carried out a comprehensive analysis of 20,531 reviews on Thten String Trimmer Spools, using our selection criteria to identify the best options in the outdoor power & lawn equipment. Our findings reveal that most customers typically select Thten String Trimmer Spools priced around $16.12.

Our team of expert editors reviewed these high-quality items and handpicked the top 7 Thten String Trimmer Spools for your consideration..

We are dedicated to assisting our users in finding the right spools Products based on their needs, saving them considerable time when choosing which Thten String Trimmer Spools to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.