D'Addario Classics Single silver-plated copper wound single strings are perfect replacement string or for creating custom classical guitar string sets.

Pro-Arté basses are wound using silver-plated copper on a multi-filament nylon core for consistent, warm-yet-projecting tone.
Perfect replacement single string from the D'Addario J31 Classical set
Silver wound on nylon fourth string
Hard tension
Made in the U.S.A. for the highest quality and performance