| D'Addario best selling flatwounds offers balance of smooth feel and warm, mellow tone Ribbon wound and polished for ultra-smooth feel and warm, mellow 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 .011, .015, Stainless Steel Flat Wound .022, .030, .040, .050 |