D'Addario Fingerboard Appliqu&eacute; Black, 3/4 Size Violin, 304mm scale Fits a 3/4 size violin or 13" viola All black appearance can barely be seen, but can be felt Promotes proper finger placement using a tactile approach Adds subtle frets to the instrument, making it easier for players of fretted instruments to cross over to violin Installs in minutes and is easily removed