PURE BLUES* Bass Strings utilize a Quantum Nickel* wrap wire, which marries the warm tone of nickel with the brightness and edge of stainless steel for a rich and tonally balanced string that is perfect for players who demand versatility. A round core increases string flexibility to produce an unsurpassed feel. Whether you play fingerstyle, with a pick, or slap, your bass will come alive with a full bottom, colorful mids, and bright articulate highs.