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10 Best String Trimmer Lines 2025 in the United States

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Our Top Picks

#1

Winner

Black+Decker Trimmer Line Replacement Spool, Autofeed 30 ft, 0.065-Inch, 2-Pack (AF-100-2)

Rating
9.8
Chosen by1,119
Compatibility

Most important from
40911 reviews

Compatibility
Installation is straightforward; simply snap on to the weed wacker and you're ready to go.

The Black+Decker Trimmer Line Replacement Spool (AF-100-2) is designed to fit a wide range of Black+Decker string trimmers, making it highly versatile. With a line diameter of 0.065 inches, it is suitable for light-duty trimming tasks.

The round line shape and factory wound 30-foot length ensure consistent feeding with minimal manual effort, thanks to the Auto Feed System. The use of centrifugal force helps achieve maximum performance, reducing the need to stop and adjust the line frequently.

This trimmer line is best for those who own compatible Black+Decker string trimmers and are looking for a hassle-free replacement option. Its lightweight design at 3.04 ounces also makes handling and installation straightforward. Despite the frequent replacement for large properties, its ease of use and compatibility make it a convenient choice for many users.

Rating
9.8
Chosen by1,119
Compatibility

Most important from
40911 reviews

Compatibility
Installation is straightforward; simply snap on to the weed wacker and you're ready to go.
#2

DEWALT Trimmer Line, 225-Foot by 0.080-Inch (DWO1DT802)

The DEWALT Trimmer Line measures 225 feet in length and has a diameter of 0.080 inches. This line is designed to be aerodynamic, maximizing the runtime of your trimmer. Made from flexible and impact-resistant materials, it is built to last and withstand tough trimming conditions.

Installing the line is straightforward—you simply wrap it around the spool. This trimmer line is compatible with both single and dual line DEWALT weed eaters and wackers, making it versatile for users of DEWALT products. It's made in the USA with globally sourced materials, ensuring a blend of quality and durability.

The trimmer line might not be the best choice for non-DEWALT trimmers, limiting its versatility across different brands. Additionally, while its aerodynamic design enhances performance, some users may find the 0.080-inch diameter less effective on thicker, tougher weeds compared to thicker lines.

#3

Oregon 22-095 Gatorline Heavy-Duty Professional Magnum 5-Pound Spool of .095-Inch-by-1134-Foot Square-Shaped String Trimmer Line

Rating
9.4
Line Diameter
Line Shape
Material

Most important from
4894 reviews

Line Diameter
This line powers through tough grass effortlessly, cutting like butter with minimal need to advance the spool.
Line Shape
The thick, square shape provides superior cutting power that can even peel grass down to the roots when handled confidently.
Material
Its durability means you rarely have to replace or feed more line, making it a long-lasting choice for heavy trimming.
Compatibility
Despite its heavy-duty build, the line feeds easily into compatible trimmer heads without hassle, improving user experience.

The Oregon 22-095 Gatorline is a heavy-duty string trimmer line designed for professional use. It has a .095-inch thickness and a square shape, which helps it cut through tough grass and weeds more efficiently than round lines. The spool contains 1,134 feet of line, giving you plenty of material before needing a replacement. Made by Oregon, a well-known brand in lawn care, this line is compatible with many string trimmers and comes as a genuine replacement part, ensuring reliable performance.

One of its strong points is the durability and cutting power, thanks to the square shape and thick diameter, which users appreciate for heavy trimming tasks. The spool is quite large, so it's great for users who want to avoid frequent replacements. However, being a heavy-duty line, it may be a bit tougher on some smaller or less powerful trimmers, potentially causing extra wear or requiring more power to operate smoothly.

This line is best suited for those who need heavy-duty trimming power, such as landscapers or homeowners dealing with thick, stubborn weeds and overgrowth. If you have a lightweight or battery-powered trimmer, you might want to check compatibility and consider if a thinner or round line would be easier to handle.

Rating
9.4
Line Diameter
Line Shape
Material

Most important from
4894 reviews

Line Diameter
This line powers through tough grass effortlessly, cutting like butter with minimal need to advance the spool.
Line Shape
The thick, square shape provides superior cutting power that can even peel grass down to the roots when handled confidently.
Material
Its durability means you rarely have to replace or feed more line, making it a long-lasting choice for heavy trimming.
Compatibility
Despite its heavy-duty build, the line feeds easily into compatible trimmer heads without hassle, improving user experience.

Buying Guide for the Best String Trimmer Lines

Choosing the right string trimmer line is essential for maintaining your lawn and garden efficiently. The right line can make trimming easier, more effective, and can even extend the life of your trimmer. When selecting a string trimmer line, consider the type of vegetation you need to cut, the power of your trimmer, and the frequency of use. Here are some key specifications to help you make the best choice.
Line DiameterThe line diameter is the thickness of the trimmer line. It is important because it determines the cutting power and durability of the line. Thinner lines (around 0.065 to 0.080 inches) are suitable for light-duty tasks like trimming grass and small weeds. Medium lines (0.085 to 0.105 inches) are better for thicker grass and moderate weeds. Heavy-duty lines (0.110 inches and above) are ideal for tough, overgrown areas with thick weeds and brush. Choose a diameter based on the type of vegetation you need to cut and the power of your trimmer.
Line ShapeThe shape of the trimmer line affects its cutting efficiency and durability. Round lines are the most common and are durable, making them suitable for general use. Twisted lines offer better cutting performance and reduced noise, ideal for medium to heavy-duty tasks. Square and star-shaped lines have sharp edges that provide more aggressive cutting, perfect for thick and dense vegetation. Serrated lines have teeth that can cut through tough weeds and brush easily. Select a line shape based on the type of vegetation and the desired cutting performance.
MaterialTrimmer lines are made from various materials, each offering different levels of durability and performance. Nylon is the most common material, known for its flexibility and strength. Reinforced nylon lines, often with added materials like aluminum or polymers, offer increased durability and are suitable for heavy-duty tasks. Some lines are made from copolymer blends, providing a balance of strength and flexibility. Choose a material based on the frequency of use and the toughness of the vegetation you need to trim.
CompatibilityNot all trimmer lines are compatible with every trimmer. It is important to check the manufacturer's recommendations for your specific trimmer model. Using the wrong line can reduce performance and potentially damage your trimmer. Ensure the line diameter and shape are suitable for your trimmer's specifications. Refer to your trimmer's manual or the manufacturer's website for compatibility information.
LengthTrimmer lines come in various lengths, typically measured in feet. The length you need depends on how often you use your trimmer and the size of the area you need to maintain. Longer lines are more economical and reduce the frequency of replacements. However, ensure you have a proper storage solution to keep the line from tangling. Choose a length that matches your usage patterns and storage capabilities.

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