D'Addario XT Electric Nickel Plated Steel strings combine our most popular electric guitar alloy with an advanced corrosion resistance 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  D’Addario XT strings combine our strongest high carbon steel with an advanced corrosion resistance treatment on every string in the set, giving you enhanced break resistance and unyielding pitch stability—all while preserving the tone and feel of your favorite uncoated strings. These strings are made to stay, with uncompromising performance that never fades away.