RED DEVILS? Red Colored Bass Strings aren?t for the timid. With round core wires and silver-plated steel wrap wires, their loud and aggressive sound compliments their vibrant color. All strings in the set are coated with a red-colored version of DR?s proprietary K3? coating, which delivers longevity, more projection, fewer unwanted overtones, and outstanding clarity and articulation. K3? Coated applied to the wrap wire is extra hard to maintain string brightness while extending life The coating eliminates unwanted overtones, helping projection, clarity and articulation The all-red color can give your acoustic guitar a distinctive and unique look