D'Addario XT Electric Nickel Plated Steel strings combine our most popular electric guitar alloy with an extended lifespan treatment on every string in the set, preserving the natural tone and feel of uncoated strings. Available for 6 string electric guitar ranging from super light to light top/heavy bottom gauges to suit a variety of playing styles and preferences. D'Addario XT strings feature high carbon steel cores with an extended lifespan treatment on every string in the set, giving you enhanced break resistance, pitch stability, and long-lasting performanceall while preserving the tone and feel of your favorite uncoated strings. These strings are made to stay, for performance that never fades away.