Graph Tech BLACK TUSQ XL PT-6143-00

As long as you measure well and take into account that they make them a bit larger so that you can trim the excess (so for a 42mm nut, buy the 43). Otherwise, perfect performance, no issues there, the only thing I've kinda noticed is that the low E could use 3-4 more passes with a file. But I haven't done it yet and I still play it so..

Great quality nut.
Easy to install and fit.
Recommended.

These nuts are a great upgrade to any guitar. Most guitars nowadays come with cheap hollow plastic nuts that wear down quickly and don't resonate at all. It's hard to say I clearly hear a big sound difference with the amount of distortion I use, but they glide well, so your strings don't get caught which improves tuning stability. Also long lasting and its easy to sand these down to the exact height you need.