D'Addario ECG24-7 Chromes Flat Wound 7-String Electric Guitar Strings, Jazz Light, 11-65 Based on the top selling ECG24 set with an additional 7th String included Ribbon wound and polished for ultra-smooth feel and warm, mellow tone 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 .011, .015, Nickel Wound .022, .030, .040, .050, .065