D'Addario EXP17 with NY Steel Coated Phosphor Acoustic Guitar Strings, Coated, Medium, 13-56

D'Addario's most popular gauge for heavy strumming, flat-picking and resonant, projecting tone

EXP Coated phosphor bronze for warm, bright, well balanced acoustic tone and 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, Phosphor Bronze Wound .026, .035, .045, .056

An ultra-fine layer of EXP Coating is bonded to the phosphor bronze wrap wire which is then wound onto the hex-shaped core wire. The result is a built-in barrier against the corrosion and wear that can quickly sap the life out of your strings and your sound. EXP coated phosphor bronze strings have a natural round wound feel and sound fresh and bright with a "new string tone" that lasts three to four times longer than traditional guitar strings.
Brand: D'Addario, Model: EXP17, Size: Medium, 13-56