D'Addario EXP12 Coated 80/20 Bronze Acoustic Guitar Strings, Medium, 13-56

EXP12s
D'Addario's heaviest 80/20 bronze set, ideal for heavy strumming and flat-picking
Extra-bright tone mixed with deep and projecting bottom end, EXP Coated for 4 times more life
Includes D'Addario's exclusive NY Steel, the same high carbon steel found in the NYXL series for unprecedented strength and pitch stability.
Environmentally friendly, corrosion resistant packaging for strings that are always fresh
String Gauges: Plain Steel .013, .017, Bronze Wound .026, .035, .045, .056