Thomastic-Infeld JS112 Medium Light Flatwound Jazz Swing Electric Guitar Strings are designed specifically for semi-acoustic and acoustic jazz guitars. Mellow but punchy tone. Gauges 13-17-21-28-39-53. A legendary flatwound jazz guitar string with a huge list of renowned players and the undisputed king of flatwounds for many of today's jazz greats. A true flatwound which is neither "ground wound" or "compressed wound" features glassy smooth polished nickel winding on a round core, and the perfect balance of fundamental to overtones required for traditional jazz. Product Specs Item Number: 3464 Make: Thomastik-Infeld Model: JS113 Condition: Brand New Categories: accessories ⇒ guitar-strings Made In: Austria MPN: JS113 UPC: 9003918701329