D'Addario Guitar Strings Set, Chromes, Jazz Light; ECG24, D'Addario's best selling gauge; flatwound strings, delivers; balance; smooth feel, warm/mellow tone and optimal tension, ideal for traditional jazz, rockabilly twang, R&B and some pop/rock styles; D'Addario's best selling flatwounds offers balance; 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; D'Addario; Chromes are the industry standard; flatwound guitar strings. They deliver; round, full low end without losing punch, making them ideal for jazz players; all types. Wound with flattened stainless steel ribbon wire, then polished; unparalleled smoothness, it's; wonder that; Chromes are the world's most popular flatwound strings.