XL nickel wound, D'Addario's most popular electric guitar strings, are precision wound with nickel-plated steel onto a carefully drawn, hexagonally shaped, high carbon steel core. The result is strings with a long-lasting, distinctive bright tone and excellent intonation, ideal for a wide variety of guitars and musical styles. D'Addario offers a full range of electric guitar singles for all your replacement or customization needs. .072 gauge nickel wound electric guitar string. Round wound with nickel-plated steel for a distinctive bright tone. Perfect as a replacement string or for creating customized sets. Made in the U.S.A. for the highest quality and performance.