EXL110, D'Addario's best selling set, offers the ideal combination of tone, flexibility and long life. The standard for most electric guitars. Round wound with nickel plated steel for distinctive bright tone. Environmentally friendly, corrosion resistant packaging for strings that are always fresh. Made in the U.S.A. for the highest quality and performance. String Gauges: Plain Steel 0.01, 0.013, 0.017, Nickel Wound 0.026, 0.036, 0.046.