Instrument Strings
Optima No.6 Gold Strings Carbon High
Optima No.6 Gold Strings Carbon High, String Set for Classical Guitar, Treble: Natural carbon, Bass: Coated with 24 carat gold, Tension: High, Made in Germany
https://www.bizrate.co.uk/strings/optima-no-6-gold-strings-carbon-oid6144315290.html