10 Best String Trimmer Lines 2025 in the United States

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.

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.

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.