D’Addario EXP17 Coated Phosphor Bronze Medium Acoustic Guitar Strings 13 – 56

Specialcoating extends string life dramatically!
Gauges:13-17-26-35-45-56.
EXP Coated Phosphor Bronze Acoustic Guitar Strings provide longer lifeand increased durability coupled with the brightness, clarity andsensitivity you've come to expect from D'Addario strings. Here is howit works: An ultra-fine layer of EXP coating is bonded to the phosphorbronze wrap wire which is then wound onto the hex-shaped core wire. Theresult is a built-in barrier against the corrosion and wear that canquickly sap the life out of your strings and your sound. And since theEXP coating is cross-linked to the wrap wire prior to winding, thestrings sound fresh and bright. New-string tone lasts 3 to 4 timeslonger than traditional guitar strings.