Replacement of old worn-out frets with new frets practically always leads to damaging and widening of fret mounting slots.
As a rule the tang width of modern frets is up to 0.5mm. Mounting of a fret like this into a damaged wide slot results in a loose (diffused) sound of the musical instrument.
SINTOMS Ltd. found a solution to this problem by offering a line of fret wire with a wider (up to 0,65mm) fret tang.
SINTOMS repair frets are successfully used by luthiers for replacement of frets. They are also used when some resistance of the neck’s deflection cause by the tension of strings should be provided.