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. D’Addario Chromes are the world’s most popular flatwound strings.