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: .012 - .016 - .020(W) - .027 - .037 - .050. 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: 2426 Make: Thomastik-Infeld Model: JS112 Condition: Brand New Finish: Nickel Categories: accessories ⇒ guitar-strings Made In: Austria MPN: JS112 UPC: 9003918701305