Ryobi 18V String Trimmer - Brush Cutter Attachment Remix

This thing works great, I use it instead of trimmer line 90% of the time.  A while back I had remixed https://www.thingiverse.com/thing:2438453 to add some (very thin) small flanges but never shared - these may break off but tend to help with clearing stuff out of the way and giving strain relief (these will break quickly in much thicker stuff/rocks).  

Credit to Doctriam on Thingiverse -  https://www.thingiverse.com/thing:2438453