D'Addario EXL120 Nickel Wound Electric Guitar Strings, Super Light, 9-42 Super light gauges for maximum flexibility and biting tone Round wound with nickelplated steel for distinctive bright tone Corrosion resistant packaging for strings that are always fresh String Gauges: Plain Steel .009, .011, .016, Nickel Wound .024, .032, .042 Made in the U.S.A. for the highest quality and performance