D'Addario JS74 Mandolin Strings, Phosphor Bronze, Stainless Steel, 11-40 D'Addario's best selling mandolin gauge Loopend construction for universal fit Round wound with nickelplated steel for distinctive bright tone 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