Microtonal frets have been developed for microtonal guitars and are of the traditional form of frets without tang.
Before installing these frets on the guitar neck, the guitar manufacturer must weld a special slider tang to the underside of the fret head.
A microtonal guitar has vertical slots (channels) in the fretboard under the strings.
Microtonal frets are inserted into the slots with a welded tang and move up and down the channel under the strings to a position chosen by the musician.
SINTOMS microtonal frets are made of nickel silver with 18%, nickel content, of stainless steel, and ringing stainless steel.