are you as tired of detuned strings like i was?
the most common reason for a detuned guitar string is that the string nut is slightly too tight and the string cannot move free back and forht, so after an, for example one-tone bending the string it cannot get back into the original tuning and as a result of that the tuning become off.
The GraphTech stringnut is self lubrication and lets the string freely move back and forth, which is going to result into a great tuning stability for your guitar
I have upgraded most of my guitars from various plastic or bone saddles to graphtech nuts, works great on hardtail and vintage tremolo style guitars, and my "out of tune" issues i had previously were solved immediately.
The graphtech nut is pre sloted, but a good setup on an instrument makes all the difference, so i suggest you, if you are not sure or not experienced enough how to setup a guitar and replace a nut, that you take your guitar with the new replacement nut and let a qualified guitar technician or luthier do the job for you.
A good setup makes everything, and you can make an cheap guitar with an ace setup even "better" playable than an expensive "custom shop" guitar with a very poor setup