Fret, Sitar, Full Set. A full set of pre-shaped sitar frets for deluxe, fancy and professional models. Each fret is numbered beginning with #1 at the top and #20 at the bottom of the neck. Neck width is approx. 9 mm. The frets are .190" in thickness, they fit on a sitar neck that is approx. 3.6" wide and with a height of approx. .6" to top of fret.