Description de chez Amazon USA : - STANDARD CLASSICAL TONE - Pro -Arte Nylon strings offer the standard classical guitar tone many players hold dear. - RESPONSIVE PLAYABILITY & WARM TONE - Utilizing our multi-filament nylon core basses and clear nylon trebles, Pro-Arte Nylon strings provide beautifully responsive playability and sweet, mellow tonal warmth. - TIE ENDS - This set features tie-ends, nylon monofilament material, and silver-plated copper wrap wire. - EARN REWARD POINTS - D Addario Pro-Arte Nylon classical guitar strings come with a code on the recyclable, resealable VCI bag, which you can register to earn Players Circle points. - MADE IN THE USA Our classical strings are made in the USA drawn to exacting specifications at our New York production facility.