EXL110, D'Addario's best selling set, offers the ideal combination of tone, flexibility and long life. The standard for most electric guitars. Buy 3 sets and save. XL Nickel, 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 long lasting, distinctive bright tone and excellent intonation, ideal for the widest variety of guitars and musical styles. D'Addario, the world's largest manufacturer of musical instrument strings, is known as "The Players Choice" with a reputation for unsurpassed quality and consistency. D'Addario's innovative packaging both reduces waste and provides protection from corrosion. All D'Addario strings are manufactured in the U.S.A. using proprietary, digitally controlled, state of the art machinery for unmatched performance, set after set.