I installed this on my Stihl straight shaft weedwacker. What a transformation! The Stihl
is a great weedwacker, however, with this blade on, it turns into a brush clearing monster! All the little saplings that I normally used a chainsaw or lopping shears for, are buzzed of easily with this blade. I sharped it with my big chainsaw's file, after several days use, and it's good to go again. I really like this blade, and when this one peters out, I'll be purchasing another. I really recommend.