D'addario ECB81-5 Chromes Flatwound 5-String Electric Bass Strings, Light, 45-132, Long Scale ECB81-5, 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. String Gauges: Wound .045, .065, .080, .100, .132