Buy 3 Sets and save on D'Addario's best selling mandolin set. / "Phosphor Bronze for long lasting, warm and bright tone and loopend construction for universal fit. " / 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 .011/.011, 015/.015, Phosphor Bronze Wound .026/.026, .040/.040 /