The D’Addario NYXL Medium Top/Heavy Bottom 11-52 electric guitar string set is a hybrid, providing the high strings moderate flexibility, with a booming, tight low end. NYXL strings offer higher break strength, enhanced tuning stability and accentuated mid-range frequency response, providing more presence and crunch to cut through the mix. Made with an NY steel core, premium nickel-plated steel wrap wire and Fusion Twist technology, NYXL electric guitar strings are tough and versatile enough to handle whatever you throw at them.