The nickelplated steel wrap wire is known for it's distinctive bright tone and excellent intonation and delivers a universally appealing tone for all playing styles. D'Addario XL Nickel Electric Bass strings are world-renowned as "The Player's Choice" amongst bass players of all genres and styles. All XL strings are precision wound on our exclusive computer-controlled machines, ensuring each string has excellent into nation, clear fundamentals, and unparalleled consistency.