NYXLs 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. NYXL1046 offers an ideal combination of comfortable playability and ideal electric tone: Plain Steel .010, .013, .017, Nickel Wound .026, .036, .046. Environmentally friendly, corrosion resistant packaging for strings that are always fresh