La Bella's Golden Alloy sets are wound with our exclusively formulated 80/20 Brass Alloy, producing a very bright tone. With the ability to sustain a?long decay of sound, these distinctive sets have a resilient string tension to ensure ease of playing.- Golden Alloy (80/20 Brass Alloy) wound strings- Bright tone; long sustain- Tension: Extra Light- String Gauges: Plain Steel: .010, .014 Golden Alloy: .020W, .028, .038, .050- Made in the USA with American Wire- Packaged using MAP Technology (Modified Atmosphere Packaging) to prevent tarnishing and ensure freshness