The PQ-1204-00 is the perfect option to upgrade the nut on your 4 string Fender Precision style bass guitar. It is pre-slotted so it makes for an 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.