A Zero Glide Nut borrows and improves on the "zero fret" concept. The product simply combines a specially-designed, nickel-silver fret with a patented bone nut. This combo reduces contact of the string and the nut by almost 93%.
This reduction drastically improves your instrument's tuning stability by allowing the string to return to its original pitch following bends or aggressive playing. An added benefit is the open-string tone becomes the same a fretted-string tone.