The PQ-1568-00 is a great option to upgrade or replace the nut on your 12 string guitar. It is pre-slotted to make for a quick and simple 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.