I was given a small used weed eater that had been put through the wringer. The line spool was hardly able to stay on the machine and when it was tapped for line feed it would just laugh at me. So I went to Lowes and started looking at the options that I had. Because of the curved shaft I was not able to use blades but thats when I found the Ugly Head Hybrid Trimmer attachment. I was instantly impressed with the results I got from this trimmer. I recommend getting one of these for your machine. Works on my cheap machine and my not cheap machine (Stihl fs90r).