D'Addario EJ74 Phosphor Bronze Mandolin Strings - .011-.040 Loopend constriction Phosphor bronze for warm, bright tone Warm and bright phosphor bronze tone with the optimal blend of tight playing tension and strong projection Loopend construction for universal fit 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