Optima 24 Karat gold GPS010 Individual Acoustic Guitar String

Optima GPS012 24 Karat Gold 012 Individual Acoustic Guitar String

Optima 2221 Mi 019w Bandola Single String

Optima Brian May Signature 009-042 Electric guitar strings

Optima 2225 Chrome-Nickel mandola string set

Optima 2035 Bandoloncelo Strings Set