[Compatible Models]: This line string trimmer replacement spool is compatible with WISETOOL Cordless Trimmer Models: 20V.
[Sturdy Material]: Made of high-quality spool and durable nylon material, with a tensile strength of over 100 pounds, flexible and long service life.
[Automatic Feed Spool]: The weed eater spool for automatically feeds the trimmer by centrifugal force, reducing the tediousness of manually sorting out the replacement trimmer line spool during work.
[Efficient Cutting]: weed eater string 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.