| D'Addario lightest gauge acoustic guitar string set, known for its superb, long-lasting tone and playing ease EXP Coated phosphor bronze for warm, bright, well balanced acoustic tone and 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 .010, .014, Phosphor Bronze Wound .023, .030, .039, .047 |