Very beautiful bone saddles with a beautiful shell. Unfortunately, they require a relative skill for application on the guitar. They are intentionally thick and need to be smoothed with sandpaper (which is included in the package) to fit the saddle. Personally, I placed them one by one in the chuck of the drill to rotate like a lathe, so that the sanding is done quickly and uniformly. I had a lot of help from the seller (Music Power Katerinis) who gave me significant tips. It is supposed that the sound is upgraded with the bone, but do not expect too much. Otherwise, it is an expensive product for enthusiasts.