D Addario XLB025W XL Nickel Wound Electric Bass Strings are world-renowned as The Player s Choice among bass players of all genres and styles. Like all XL strings the .025 long scale string is precision wound on D Addario s exclusive computer-controlled machines ensuring each string has excellent intonation clear fundamentals and unparalleled consistency. The nickelplated steel wrap wire is known for its distinctive bright tone and excellent intonation and delivers a universally appealing tone for all playing styles.