ECB82, D'Addario's heaviest Flatwound bass strings, are known for their warm, mellow tone and smooth polished feel. Chromes deliver a deep, rich low bottom end which makes them the flat wound choice of Jazz, R&B; and Pop musicians. These strings are designed for long scale basses (34”+) and have a taper at 36 – 7/8”.D'Addario's medium gauge flatwound bass guitar setRibbon wound and polished for ultra-smooth feel and warm, mellow toneThese strings are designed for long scale basses (34”+) and have a taper at 36 – 7/8”Made in the U.S.A. for the highest quality and performanceString Gauges: Wound .050, .070, .085, .105Environmentally friendly, corrosion resistant packaging for strings that are always freshD'Addario XL Chromes are the industry standard in flatwound guitar strings. They deliver a round, full low end without losing punch, making them ideal for jazz players of all types. Wound with flattened stainless steel ribbon wire, then polished to unparalleled smoothness, it's no wonder that XL Chromes are the world's most popular flatwound strings.