Rosette worked with Gold Tone to produce a new Classical Guitar zero fret design that integrates a zero fret within the nut. This combination provides all the benefits of a Zero Fret without altering your guitar. Your standard nut can easily be interchanged with the Zero Glide design. This special Zero Glide Classical Guitar nut features a wider 52mm length and special string spacing of 42.5 mm. This spacing is the most common on quality classical guitars. In addition, the nut slots are slightly off centre, allowing for more space between the high E string and the edge of the fingerboard. This kit features 4 different frets, so you can experiment to see what fret height is optimal for your instrument. Installation takes about an hour, and full instructions are included. The classical guitar nut is just as important as the bridge saddle for optimal playing action. The Zero Glide provides the best possible playing action from the head side of the guitar neck. Open position is like playing with a capo. In addition, there is over 90% less friction while tuning. The string freely moves during tuning, without "jumping". The Zero Glide is interchangeable with a conventional nut without alteration to the instrument. Rapid installation of the Zero Glide is simple and easy, and well within the expertise of your local instrument repair shop. The new Classical Guitar Zero Fret is one of the most affordable solutions for a better playing classical guitar. Unconditionally guaranteed to improve your playing experience.