The high carbon steel used in NYXL strings offers higher break strength, enhanced tuning stability, and accentuated mid-range frequency response. Features NYXL's feature D'Addario's exclusive New York manufactured, high carbon steel alloy for unprecedented strength Play Fearlessly Improved tuning stability compared to traditional nickel wound strings - get in tune faster, stay in tune better Wound strings with enhanced mid-range frequency response in the 1 - 3.5 kHz range more presence and crunch to cut through the mix NYXL1149 offers moderate flexibility and a full, beefy tone: Plain Steel .011, .014, .018, Nickel Wound .028, .038, .049 Environmentally friendly, corrosion resistant packaging for strings that are always fresh Specifications Coating: Uncoated Number Of Strings: 6 Set Quantity: Sets Wrap Material: Nickel-Plated Steel