Gator Trimmer line is the best i ever used. Have a Weed Eater Feather Lite grass trimmer and was never crazy about it until i gave this Gator line a try. My trimmer uses the .065 thickness and cuts through anything. Even the thick grass that over grows the sidewalk it can handle. Grass, Roots and the dirt underneath it cute through with no troubles. This should be the only line used in gass trimmers and will be for me from now on. It isn't any stronger than the regular rounded lines but cuts a whole lot better.