D'Addario EJ37 12-String Phosphor Bronze Acoustic Guitar Strings, Medium Top/Heavy Bottom, 12-54

• D'Addario's medium top/heavy bottom 12-string acoustic set with a wound octave A-string for enhanced low end
• Phosphor Bronze, preferred for its warm, bright, and well balanced acoustic tone
• Environmentally friendly, corrosion resistant packaging for strings that are always fresh
• Made in the U.S.A. for the highest quality and performance
• String Gauges: Plain Steel .012/.12, .016/.016, Phosphor Bronze Wound .025/.010(p), .032/.015(p), .042/.022(w), .054/.030(w)