Instructions are far from clear. This must be designed for many models because there were a bunch of parts left over. The blade is great on light brush, but no good on thick grass and it bounces back on any wood over 1/2 inch thick. I also don't understand the point of the one handle. With only one you can't really use it because the trimmer twists to the side when you hold it. On the upside, the parts all seem high quality and it goes through light brush, milkweed, thistle, cattails, and tree saplings like butter.