Medium-tension 6 string set for classical guitar that contains black nylon trebles and polished Golden Alloy wound basses, delivering warm tone. These strings produce purer treble tones and higher overtones on the bass strings. Set is packaged with a use of MAP technology (Modified Atmosphere Packaging) to ensure freshness and prevent tarnishing. Made in the USA with American wire. Gauges: Black nylon - .028, .032, .040; Golden Alloy wound basses - .029, .034, .041.