The 4161-00 is a great option to replace and upgrade the nut on a PRS or Parker-style guitar, tapered.
It comes unslotted to make for a quick and easy install.
TUSQ delivers a rich tone, crystal clear bell like high end with big open lows and a significant increase in harmonic content and harmonic sustain. Increase harmonics equals more richness and character in your tone. Its the difference between a four piece choir and a twelve piece choir singing every time your play a note.