D'Addario EJ45 Pro-Art&eacute; Nylon Classical Guitar Strings, Normal Tension (7 Pack) Best value for D'Addario guitar strings: multi-pack bundle savings on a range of string types and sizes Made in the U.S.A. for the highest quality and performance D'Addario EJ45 Pro-Art Nylon Classical Guitar Strings Normal Tension String Gauges: Trebles .0280, .0322, .0403 Basses .029, .35, .043