LaBella 2001FM Classic Flamenco Medium Flamenca Negra treble strings possess a greater power, brilliance and a longer string life than any other string design on the market. ONE STRING ONLY Silver-Plated wound basses produce exceptional memory for pitch and consistent sound production Medium Tension String Gauges: Black Nylon Trebles: .028 .032 .040; Silver-Plated Wound Basses: .029 .035 .042 Made in the USA with American Wire Packaged using MAP Technology (Modified Atmosphere Packaging) to prevent tarnishing and ensure freshness