Hi-def neon multi-color colored bass strings: light 40-100 Available in a wide variety of luminescent color options Designed to give your stage presence a little extra pop, especially under UV black lighting They feature a round core Wire and a silver-plated nickel-plated steel wrap The neon colored K3 coating delivers longevity, more projection, fewer unwanted overtones, plus enhanced clarity and articulation 40, 60, 80, 100