MODIFIED REVIEW EXPLAINING RETROFIT. Do not buy if you have a Homelite trimmer as it will not fit unless you can weld; the way to fit it to a homelite, is to go get a RH thread 5/16x1.25 bolt (about the size of the LH thread bolt you get with the package) and a 3/8 nut which you run up the 5/16 bolt to its head and weld the heads together. Take the bump knob off the existing bail and add a couple of space washers (a couple of lock washers work very well, as they are thicker) to the shaft, and install the GrassGator using your newly welded bolt.