Check the listing for details. D'Addario EJ67 Mandolin Strings Nickel Medium 11-39. Condition: New. Listed at 9.95 USD. EJ67 Mandolin Strings Nickelplated Medium 11-39 D'Addario EJ67 mandolin strings are great for electric or acoustic mandolin playing. J67 mandolin strings are wound with nickelplated steel, known for its distinctive bright tone and excellent projection.D'Addario mandolin strings are trusted by legends like David Grisman, Ricky Skaggs, Ronnie McCoury, Doyle Lawson, Rhonda Vincent, Mike Marshall, Adam Steffey, and more, for their natural acoustic tone and reliable performance. They are made from the highest quality plain steel, stainless steel, nickel plated steel and phosphor bronze and are available in a wide variety of gauges.EJ67 mandolin strings, great for electric or acoustic mandolin playingLoopend construction for universal fitRound wound with nickelplated steel for distinctive bright toneMade in the U.S.A. for the highest quality and performanceString Gauges: Plain Steel .011/.011, 014/.014, Nickel Wound .025/.025, .039/.039