ELIXIR EL16002 Muta Acustica 10-47MUTA 10 47 EXTRA LIGHT CHITARRA ACUSTICA Acoustic Phosphor Bronze with NANOWEB Coating The longest lasting tone night after night! Elixir Strings Acoustic Phosphor Bronze with NANOWEB Coating deliver distinctive phosphor bronze warmth and sparkle together with extended tone life #1 acoustic guitar string* Only coated string brand to protect the entire string with an ultra thin coating, keeping gunk out of the gaps between the windings Extended Tone