D'Addario EXL120-7 Nickel Wound 7-String Electric Guitar Strings, Super Light, 9-54 Super light 7-string 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 , .054 Made in the U.S.A. for the highest quality and performance