D'Addario's lightest gauge acoustic guitar string set, known for its superb, long-lasting tone and playing ease / Preferred for its warm, bright, and well balanced acoustic tone / Environmentally friendly, corrosion resistant packaging for strings that are always fresh / Made in the U.S.A. for the highest quality and performance / String Gauges: Plain Steel .010, .014, Phosphor Bronze Wound .023, .030, .039, .047 /