Garden Tools

The Best String Trimmer Lines & Spools

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Maintaining a pristine lawn often involves more than just mowing. A reliable string trimmer line and spool are essential for tackling stubborn weeds and edging with precision. Selecting the right type can significantly impact your tool's performance, efficiency, and longevity, ensuring a well-groomed yard with less effort.

No. 1
Viabrico .095" Weed Eater String, Square Orange Heavy Duty String Trimmer Line, Weed Wacker String Universal...
  • 【High Efficiency】Featuring an innovative square shape, this weed wacker string provides sharp edges for an aerodynamic cutting experience. The unique design significantly increases the cutting surface area by 300%, delivering even-cut edges and a...
  • 【Heavy Duty Weed Eater String】Stop struggling with thin lines that break easily. Our newly upgraded weed eater string is crafted from premium Polyamide material. With a massive 110 LB Tensile weight and High Impact Resistance, this heavy-duty trimmer...
  • 【Abrasion & Crack Resistant】Engineered for professionals, our string trimmer line boasts exceptional abrasion resistance and high crack resistance. The advanced material science extends the deterioration cycle to 5 years, making it a cost-efficient...
  • 【Effortless & Reduced Tangling】Our .095" trimmer line heavy duty is precision-wound to minimize misfeeds, reduce jamming, and reduce tangling. This effortless & uninterrupted design allows you to save working time, providing a smooth, continuous feed...
  • 【Universal Compatibility & Reliable Performance】 Our weedeater line is the perfect trimmer string for any gas, electric, or cordless string trimmer that accepts trimmer line 0.095''. This weed trimmer line provides a seamless fit and consistent...
SaleNo. 2
10 Pack Weed Eater String Compatible with Black+Decker, AF-100 0.065" Weed Wacker String Refill 240ft...
  • Replacement Spools Models: AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2:Compatible with BLACK+DECKER Weed Eater GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, CST1000, CST1100, CST1200, CST2000, MTC...
  • Automatic Feed Spool: Eventronic replacement spool for Black and Decker weed eater is easy to use , automatically feeds the trimmer by centrifugal force, reducing the tediousness of manually sorting out the replacement trimmer line spool during work.
  • Abrasion Resistant: Eventronic trimmer string for BLACK+DECKER weed eater is constructed with an upgraded nylon polyamide material that has a tensile strength of over 100 lbs and which is 30% more durable than other brands for longer life.
  • Efficient Cutting: Eventronic Trimmer spool line for Black&Decker weed eater is pliable and flexible, allowing for the line to stretch and cushion on impact with hard surfaces, and increasing cutting efficiency by 50%, making each spool to cut more weeds
  • Professional Seller: As a professional brand, we have an excellent after-sales service team and and product quality warranty. Package contains 8 replacement spools for black and decker, 2 spool cap covers of RC100P, 2 spring.
No. 3
BLACK+DECKER Weed Eater String, Genuine OEM Authentic Trimmer Line, 3-Pack, 30-Feet of Replacement Spool...
  • BLACK+DECKER replacement spool system eliminates time spent hand winding string trimmers
  • Compatible with: BESTA51, BESTA512, BEASE62, CST1, CST12, CST2, GH4, GH5, GH6, GH61, GH9, GH912, LST12, LST136, LST14, LST21, LST22, LST3, LST4, LST42, LST522, LST118, LSTE522, LSTE523, LSTE525, NST118, NST124, NST1118, NST181, NST218, NST2118, ST7, ST...
  • Compatible with most BLACK+DECKER string trimmers; 3 feet replacement line is factory wound for a superior feed
  • Includes (3) 0.065 inch diameter line replacement spools
  • The BLACK+DECKER spool utilizes centrifugal force to feed the trimmer line as it is needed
  • 2 Year Limited Warranty
SaleNo. 4
YWTESCH 16 Pack Weed Eater String Compatible with Black+Decker, 360ft 0.065" AF-100 Replacement Spool...
  • SUITABLE FOR MULTIPLE COMPATIBLE WITH BLACK+DECKER MODELS: GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, CST1000, CST1100, CST1200, CST2000, MTC220, MTE912, NST1018, NST1024, NST1118, NST1810, NST...
  • EFFICIENT CUTTING: 0.065-Inch durable polyamide nylon thread (30 FT. long/pcs), flexible and long service life. Use centrifugal force and aerodynamics to reduce drag easily cuts through grass and weeds
  • HIGH QUALITY: Pliable and flexible allowing for the line to stretch and cushion on impact with hard surfaces. Automatic feeding system to change spools eliminates the time-consuming task of manually winding the line. Makes mowing the lawn easier and more...
  • ABRASION RESISTANT: The trimmer line is made of improved nylon polyamide material with a tensile strength of over 100 lb, which is 30% more durable than other brands and lasts longer
  • MORE DURABLE: The spools are made of the latest materials to withstand the high speeds of the weed wacker, resulting in higher durability
SaleNo. 5
Ryobi One PLUS+ AC80RL3 OEM .080 Inch Twisted Line and Spool Replacement for Ryobi 18v, 24v, and 40v Cordless...
  • OEM REPLACEMENT SPOOL: Genuine Ryobi AC80RL3 replacement line and spool designed for a perfect fit and reliable performance.
  • WIDE COMPATIBILITY: Compatible with Ryobi 18v, 24v, and 40v cordless string trimmers, making it a versatile replacement option.
  • TWISTED LINE DESIGN: Features .080 inch twisted trimmer line for improved cutting efficiency and reduced noise during operation.
  • EASY INSTALLATION: Designed as a direct OEM replacement spool for quick and hassle-free swapping when your current line runs out.
  • CONSISTENT RESULTS: Delivers clean, precise cuts on grass and weeds, helping to keep your lawn and garden edges looking neat and tidy.
SaleNo. 6
WORX Replacement Spool & Line for String Trimmers, 6-Pack, WA0010
  • HIGH-PERFORMANCE LINE: DNA2 DoubleHelix cutting line has a unique aerodynamic shape for reduced drag and a sharper edge for trimming and edging.
  • PRE-WOUND, READY TO GO: Each spool contains 10 feet of line, comes pre-wound, and installs in seconds.
  • 60 FEET OF LINE: Each six pack contains 60 feet of DNA2 DoubleHelix line to keep you stocked up.
  • DO IT YOURSELF. DO IT BETTER. DO IT WITH WORX: WORX tools are engineered with cutting-edge technology, and above modern efficiency standards, so you can build a cost-effective tool collection that’s been designed to last.
  • DESIGNED FOR WORX TRIMMERS: The specially engineered diameter of this line is 0.065 and is specially made for WORX trimmers.
SaleNo. 7
VIABRICO .080" Weed Eater String, Square Orange Heavy Duty String Trimmer Line, Weed Wacker String Universal...
  • 【High Efficiency】Featuring an innovative square shape, this weed wacker string provides sharp edges for an aerodynamic cutting experience. The unique design significantly increases the cutting surface area by 300%, delivering even-cut edges and a...
  • 【Heavy Duty Weed Eater String】Stop struggling with thin lines that break easily. Our newly upgraded weed eater string is crafted from premium Polyamide material. With a massive 110 LB Tensile weight and High Impact Resistance, this heavy-duty trimmer...
  • 【Abrasion & Crack Resistant】Engineered for professionals, our string trimmer line boasts exceptional abrasion resistance and high crack resistance. The advanced material science extends the deterioration cycle to 5 years, making it a cost-efficient...
  • 【Effortless & Reduced Tangling】Our .080" trimmer line heavy duty is precision-wound to minimize misfeeds, reduce jamming, and reduce tangling. This effortless & uninterrupted design allows you to save working time, providing a smooth, continuous feed...
  • 【Universal Compatibility & Reliable Performance】 Our weedeater line is the perfect trimmer string for any gas, electric, or cordless string trimmer that accepts trimmer line 0.080''. This weed trimmer line provides a seamless fit and consistent...
No. 8
YWTESCH Trimmer String for Ryobi One Plus+ AC80RL3,11 FT/0.080-Inch,Spool Replacement Compatible with Ryobi...
  • COMPATIBLE WITH STRING TRIMMER: Ryobi ONE Plus+ Cordless Trimmer Models: 18V, 24V and 40V
  • HIGH QUALITY: 0.080-Inch durable polyamide nylon thread, flexible and long service life. Use centrifugal force and aerodynamics to reduce drag easily cuts through grass and weeds
  • AUTOMATIC FEEDING SPOOLS: Automatic feeding system to change spools eliminates the time-consuming task of manually winding the line. Makes mowing the lawn easier and more convenient
  • ABRASION RESISTANT: The trimmer line is made of improved nylon polyamide material with a tensile strength of over 100 lb, which is 30% more durable than other brands and lasts longer
  • MORE DURABLE: The spools are made of the latest materials to withstand the high speeds of the weed wacker, resulting in higher durability
SaleNo. 9
YWTESCH 7 Packs Weed Wacker String Replacement for Ryobi One+ AC14RL3A,0.065-Inch String Trimmer Refill...
  • COMPATIBLE WITH STRING TRIMMER: Weed wacker string replacement compatible with Ryobi One + multiple weed wacker models: 18V, 24V and 40V
  • DIAMETER & LENGTH: High quality 0.065in diameter and 11ft. long string trimmer refill cuts through grass and weeds with ease
  • AUTOMATIC FEEDING SPOOLS: Automatic feeding system to change spools eliminates the time-consuming task of manually winding the line. Makes mowing the lawn easier and more convenient
  • ABRASION RESISTANT: The weed eater string is made of improved nylon polyamide material with a tensile strength of over 100 lb, which is 30% more durable than other brands and lasts longer
  • MORE DURABLE: The string trimmer line spools are made of the latest materials, which have the ability to withstand the high speeds of the weed wacker and therefore have higher durability
SaleNo. 10
Anleolife .095" 3-Layer Twisted String Trimmer Line for Weeds, 1 lb Donut
  • 3-LAYER TWISTED SPIRAL LINE: White center layer with blue side layers creates a 3-layer twisted profile for smooth line flight, cleaner cuts, and everyday trimming
  • SMOOTHER, QUIETER TRIMMING: Aerodynamic spiral shape helps reduce turbulence, harsh line noise, and trimmer vibration during grass cleanup, edging, and routine lawn care
  • COMMON NAMES & FIT CHECK: Commonly searched as weed eater string, weed whacker line, weed wacker string, trimmer string, or .095 replacement trimmer line; use with heads rated for .095 in line
  • COMPATIBLE GAS & ELECTRIC TRIMMERS: Fits compatible .095 trimmer heads from Husqvarna, Echo, Stihl, Weed Eater, EGO, Oregon, Milwaukee, Dewalt, and other supported makes; check your model manual before loading
  • 393 FT DONUT WITH EMBEDDED CUTTER: Compact 1 lb donut is easy to store and carry; built-in cutter helps pull, measure, cut, and reload without a separate blade

Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best String Trimmer Lines & Spools

Comparison Tips

  • Line Material: Opt for nylon or copolymer for general use. Reinforced versions offer enhanced durability.
  • Line Shape: Round is standard. Twisted or square lines can be more effective on tough weeds.
  • Line Diameter: Match the diameter to your trimmer's capabilities and the type of vegetation you'll be cutting.
  • Spool Type: Choose between manual winding or convenient auto-feed systems.
  • Trimmer Model: Always confirm spool and line compatibility with your specific string trimmer.

Frequently Asked Questions

What is the difference between trimmer line and spool?
The string trimmer line is the cutting filament that extends from the spool. The spool is the housing that holds the line and attaches to the trimmer head, feeding the line as it's used.
How do I know what size trimmer line to buy?
Check your string trimmer's manual for the recommended line diameter. Using the correct size ensures optimal performance and prevents damage to the trimmer head or motor.
Can I use any spool on my string trimmer?
No, spools are often model-specific. It's essential to ensure the replacement spool is designed for or compatible with your particular string trimmer model.
How often should I replace my trimmer line?
The frequency of replacement depends on usage and the toughness of the vegetation. You'll need to replace it when it breaks or wears down significantly.
What is the advantage of a twisted trimmer line?
Twisted trimmer lines can offer a cleaner cut on dense weeds and brush compared to standard round lines. They are often designed to reduce noise and vibration as well.
Are copolymer trimmer lines better than standard nylon?
Copolymer lines are generally more durable and resistant to heat and abrasion than standard nylon. This can lead to less frequent line breakage and a longer lifespan, especially for demanding tasks.