Ernie Ball Flatwound guitar strings are the perfect complement for players seeking a warm, mellow tone and a smooth vintage feel. The wound strings are constructed with tin-plated steel hex cores, wound with a stainless steel ribbon wrap that has been polished to a smooth glass-like finish. The resulting sound is vintage-inspired with a dark, smooth fundamental. Due to the polished flat ribbon surface, the inherent finger noise with traditional strings is virtually eliminated making these strings a favorite among Jazz players and session recording artists alike. Gauges: .011, .015, .020w, .028, .040, .050