JUEGO CUERDAS PARA GUITARRA ACUSTICA Acoustic Guitar 6-String Set. DRAGON SKIN+. Coated Phosphor Bronze Acoustic Guitar Strings. Bluegrass 12-56: 12, 16, 24, 34, 45, 56. Bluegrass. Round Core Wire with Accurate Core Technology on a Ball End with a Clear Coated Phosphor Bronze Wrap Wire.