| D'Addario 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 Feature D’Addario’s exclusive New York manufactured, high carbon steel 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 |