Elixir Strings Acoustic Phosphor Bronze with NANOWEB Coating deliver distinctive phosphor bronze warmth and sparkle together with extended tone life that players have come to expect from Elixir Strings. The #1 selling US acoustic guitar string, Elixir Strings, provide consistent performance, smooth feel and reduce finger squeak. With less hassle and expense of frequent string changes, you enjoy more time making music. Gauges: .012, .016, .024, .032, .042, .053