Visor Nut is a bone nut developed based on MTS theory (Patent no. 4383272).
This can dramatically improve the intonation near the lower fret positions of electric guitars.
Since the material is bone, even if you replace a nut originally installed on a guitar with a Visor nut, the tone won’t change much.
Rather, the guitar can make beautiful harmony and sound, as the intonation of each string is almost improved.