It has durability, more than the gray square of the same company. It is a bit more difficult to thread into the universal head that I have installed on my trimmer. Smaller packaging size. It is enough to straighten it with your hand for about 3 minutes to pass it through straight. It does its job. I will also try another trimmer line to compare which one is more worthwhile. It does not strain the trimmer (Craft, 3 horsepower, foldable). It is quieter than the square one that was recommended and purchased initially. It does a slightly better job than the square one, with slightly better durability (does not easily break).