D'addario EJ36 Light 80/20 12-String Bronze Acoustic Guitar Strings 6-Pack Designed for all makes and models of 12-string acoustic guitars Extra-bright tone mixed with deep and projecting bottom end Corrosion resistant packaging for strings that are always fresh Made in the U.S.A. for the highest quality and performance D'Addario steel strings is made from carefully drawn, hexagonally shaped, high carbon steel wire