Designed for all makes and models of 12 String acoustic guitars / Extra-bright tone mixed with deep and projecting bottom end / 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/.10, .014/.014, Bronze Wound .023/.008(p), .030/.012(p), .039/.018(p), .047/.027(w) /