I'm really glad I made this upgrade to my Epiphone Les Paul Custom Pro, first of all it look so damn good especially the vintage style buttons but a gold metal!!!, The built quality is really good and you can really say that it is made very well. It also helps with the tuning stability and the weight is perfect on this machine heads. Just a warning, I widen the holes on my Epiphone because this is not an exact drop ins to the Epiphone and I have to widen the holes a little bit, but I think with Gibson it is a perfect fit. Great upgrade and quality and it looks modern vintage. I really loved it!!!