Garden Tools

The Best String Trimmer Lines & Spools

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Our picks are based on Amazon bestseller rankings, Amazon 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.

SaleNo. 1
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
No. 2
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...
No. 3
Eventronic 15 Pack (WA0010) Trimmer Line Spool for Worx Weed Eater
  • Compatible with Worx String Trimmer Models: 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, WG...
  • Premium Durable Material, Built to Last: Constructed from high-strength nylon to prevent breakage during trimming, withstand heavy-duty use, and deliver 35% greater wear resistance. This extends service life and reduces frequent replacements.
  • More Efficient Cutting: Maintains low-resistance cutting performance at high rotational speeds, minimizing power loss and boosting cutting efficiency 40%. Delivers consistent, reliable output for professional trimming, garden maintenance, and...
  • Easy Installation: Enables quick replacement, serving as the perfect replacement spool for WORX trimmers—no manual winding required. The automatic feed system makes weeding effortless. Replacement spool for Worx trimmer ×12; Replacement Cap ×3.
SaleNo. 4
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.
No. 5
Arnold Maxi-Edge .08-Inch x 140-Foot Commercial Grade Trimmer Line
  • Maxi Edge .080" Trimmer Line
  • Universal / Fits most straight and curved shaft string trimmers
  • Contains 7 refills, 140 ft.
  • Includes cutting tool
No. 6
VIABRICO .080" Weed Eater String 425FT x 1.35LB Square String Trimmer Line
  • 【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...
No. 7
YWTESCH 8 Pcs CMZST0653 Weedeater String Fit for Craftsman Weed Wacker
  • 【WORK WITH CRAFTSMAN WEED EATER】8 Pcs YWTESCH weedeater string fit for Craftsman weed eater models : CMCST900, CMCST900B, CMCST900D1, CMESTA900, CMESTE920, CMZST98020, CMEST913, CMCST915. String Trimmer Line Replacement Spool Models:CMZST...
  • 【CRAZY STRONG TRIMMER STRING】YWTESCH weed eater string for Craftsman made of PA6(Nylon) & 30% GF (Glass Fiber). Nylon is reinforced with glass fibre, provides greater abrasion and heat resistance, with a tensile strength of more than 100 lbs, enabling...
  • 【COMPLETELY APPLICABLE】YWTESCH weedeater line spool for craftsman precise control of spool size and structural shape makes it a perfect match for the automatic feeding function of the weed wacker.The rigorous non-slip design of the matching cap...
  • 【PRELOADED STRING TRIMMER SPOOLS】Not having to spool string yourself. YWTESCH preloaded spools are an easier way and it actually lasts pretty well. Just popping these in and keep working as opposed to have to wind string. Unless one is really talented...
No. 8
YWTESCH 10 Pack AF-100 Weed Eater String for Black and Decker, 0.065" 240ft
  • 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
No. 9
Husqvarna Titanium Force 0.095 String Trimmer Line 639005102, Outdoor Tools
  • Includes one Husqvarna Titanium Force Trimmer String .095 Inch, 140-Foot Weed Trimmer Line compatible with all standard string trimmer heads
  • Made For Durability: Round, dimpled, co-extruded weedeater line is made of a commercial-grade polymer for maximum durability, cutting performance and energy efficiency
  • Precision Manufacturing: This Husqvarna weed eater string has an undulated surface for quiet operation and precise cutting. This trimmer accessory that makes a great gift for men
  • Low Noise: This patented weed wacker string reduces the noise level by 50% to give a better working environment for homeowners. Think of this product when choosing Fathers Day gifts for dad
SaleNo. 10
Echo 330095071 String Trimmer Line
  • Ideal for all residential and commercial jobs; medium to heavy rugged weeds
  • Twisted design reduces noise levels and trimmer vibrations, while its square edges deliver optimum cutting performance
  • Razor sharp edge for fast, clean and efficient cutting
  • Resistant to welding and high temperatures

Last update on 2026-10-16 / 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.

How we compare Garden Tools

1 Specifications: we compare the key features and specifications listed by the manufacturer and on Amazon.
2 Customer ratings: we take into account the average Amazon rating and the number of reviews.
3 Price: we check the current price and highlight notable deals.
4 Updates: comparisons are refreshed regularly as prices and availability change.

Our comparisons are reviewed and updated regularly to reflect the latest products and prices.

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