| D'Addario heaviest gauge mandolin set, ideal for hard driving, percussive playing styles Loopend construction for universal fit Phosphor Bronze for long lasting, warm and bright tone | Made in the U.S.A. for the highest quality and performance String Gauges: Plain Steel .0115/.0115, 016/.016, Phosphor Bronze Wound .026/.026, .041/.041 Environmentally friendly, corrosion resistant packaging for strings that are always fresh |