D'Addario NYXL1046 Light Electric Guitar Strings 5-Pack with FREE NS Micro Headstock Tuner Features D'Addario's exclusive revolutionary high carbon steel alloy Offers more strength, break-resistance, and improved tuning stability compared to traditional nickel wound strings Wound strings contain enhanced mid-range frequency response in the 1-3.5kHz range - boosting presence and crunch Offers an ideal combination of flexibility and tone: Plain Steel .010, .013, .017, Nickel Wound .026, .036, .046 NS Micro Headstock Tuner