The PQ-1728-00 is the perfect option to upgrade the nut on your six string guitar. It is pre-slotted 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. Dimensions: 1.715" x 0.202" x 0.336" (43,57 x 5,13 x 8,53 mm). E to e spacing: 1.386" (35,2 mm).