D"Addario Chromes Flatwound Bass strings are famed for their smooth feel and warm, mellow tone. The strings are wound using an outer flattened, "ribbon" wire which is then polished to an incredibly smooth finish. Chromes deliver a deep, rich low bottom end that make them "the" flat wound choice of Jazz, R&B, and Pop musicians.Single E bass string Smooth feel Warm, mellow tone Wound outer flattened, "ribbon" wire Incredibly smooth finish Long Scale .132" diameter