Red Devils - Red Colored bass strings: Medium 45-105 With round Core wires and silver-plated nickel-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 Delivers longevity, more projection, fewer unwanted overtones, and outstanding clarity and articulation 45, 65, 85, 105