EJ10 is an extra light gauge 80/20 Bronze set providing lower
tension ideal for vintage instruments and playability. 80/20
Bronze, the original acoustic alloy introduced by John D'Addario
Sr. and John D'Angelico in the 1930s is a popular alloy for
recording due to their crisp, deep and projecting tone and appeal
to many traditionalists and vintage enthusiasts for their
historical significance.