NYXLs are our premium uncoated electric strings, delivering unrivaled strength and tuning stability, plus enhanced mid-range - The premium nickel-plated steel wrap wire used for NYXLs provides accentuated frequency response in the 1 - 3.5 kHz range, so you get more presence and crunch to cut through the mix. - Fusion Twist technology assures NYXL electric guitar strings stay in tune 131% better than standard strings, while the NY Steel core wire makes them up to 40% stronger?bent two whole steps higher, NYXL strings are still at less than 75% of their breaking point. - NYXL strings come with a code which you can register to earn Players Circle points. - NYXL electric guitar strings are made in the USA?drawn to our exacting specifications at our New York production facility -