D’Addario EXP12 with NY Steel 80/20 Bronze Acoustic Guitar Strings, Coated Medium, 13-56
An ultra-fine layer of EXP Coating is bonded to the 80/20 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 80/20 Bronze strings have a natural round wound feel and extra-bright tone that lasts three to four times longer than traditional guitar strings.
Product Features
- 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


I like that I don’t feel the need to change strings …
Best I’ve found.