D'Addario 45-132 XL Chromes Flatwound - Light - 5-StringECB81 5, the 5 string version of D'Addario's best selling Flatwound bass strings, are known for their warm, mellow tone and smooth polished feel. With the addition of a . 132 low B, Chromes deliver a deep, rich low bottom end which makes them the flat wound choice of Jazz, R&B and Pop musicians. Fits long scale basses with a string scale length of up to 36 1 4 inches. D'Addario Chromes Bass strings are wound with flattened stainless steel ribbon wire