I have an Ibanez RGA-32 MOL that was giving me tuning issues.
It is setup very well, so it was not due to the setup.
I normally change my nuts to Graph tech tusq, I just hadn't done it on this, as the original nut look like a graphite type.
I had one of these lying around, I checked the string spacing and it was spot on.
I had to sand the sides a hair to make it it fit. The bottom and the side facing the fretboard also needed a little sanding, but that's normal with tusq nuts.
The change was obvious, the sustain and ring of the guitar was instantly hearable.
I only needed to file the slots a hair too, that's just great.
The width is 43mm FYI.
A great product, if installed right will last a lifetime!