This pair of nuts are great to replace your jazz bass one. The only downside is that I've used it on a Squier Jazz Bass, which has a flat pocket for the nut, and these ones are curved to the same radius of the fretboard. You can work around it and fill the little gap in the middle, but requires a bit of work. The low E string slot if a bit larger than I expected and a .100 gauge will not fit properly on the sides. I recommend using at least a .105 gauge to make it a snug fit.