D'Addario XL nickel-coated electric bass strings are renowned worldwide as the choice of players among bassists of all genres and styles. All XL strings are precisely wound on exclusive, digitally controlled machines, ensuring that each string offers excellent intonation, clear fundamental tones, and unmatched consistency. Each string is wrapped with nickel-coated steel wire, known for its characteristic bright sound and excellent magnetic properties, delivering a universally appealing and versatile tone for all playing styles. D'Addario offers a complete range of bass guitar strings for all your replacement or customization needs. Round wound with nickel-coated steel for a characteristic bright sound with clear fundamental tones. Suitable for long-scale basses with a string length of up to 36 1/4 inches. Perfect for replacement strings or custom sets. Made in the USA for the highest quality and performance. .040 gauge.