D'Addario Chromes Flatwound Electric Guitar Strings ECG24 11-50 2 Pack Jazz Light Gauges:.011, .015, .022w, .030w, .040w, .050w ECG24, D'Addario's best selling gauge of flatwound strings, delivers a balance of smooth feel, warm/mellow tone and optimal tension, ideal for traditional jazz, rockabilly twang, R&B and some pop/rock styles. D'Addario Chromes are wound with flattened stainless steel ribbon wire which is polished to an incredibly smooth surface. Chromes deliver a distinctive damped but tone-rich sound that only flatwounds can produce.