I have two guitars, and Ovation Celebrity and a small travel guitar called a Montana made by Kaman.  The Chord Buddy did not fit either one!  I am a very mechanically inclined person, and tried for quite a while to make the Chord Buddy work.  Apparently, it fits "most" guitars--so be careful!  Maybe a quick call to the manufacturer will help.  They would be smart to track the guitars it does not work on.  I think it's a great idea, and I'm disappointed that it would not work for me.