The Sweetone set includes clear nylon trebles and silver-plated wound basses. A student's set recommended for beginners, these strings are extremely low-priced and have a great tone.- Bright tone- Tension: Medium- String Gauges: Clear Nylon .028, .032, .040, Silver Plated Wound .0275w, .032, .040- Made in the USA with American Wire- Packaged using MAP Technology (Modified Atmosphere Packaging) to prevent tarnishing and ensure freshness