The D'Addario XLB040 Nickel Wound Bass Guitar Single String is a high-quality string designed specifically for bass guitars with a long scale length. With a gauge of .040, it offers a balanced and versatile tone, making it suitable for a wide range of musical styles. The nickel-plated steel wrap wire ensures durability and longevity, while providing a bright and articulate sound. Whether you're playing jazz, rock, funk, or any other genre, the D'Addario XLB040 delivers reliable performance and excellent playability. This single string is an ideal choice for both professional bassists and passionate enthusiasts seeking a dependable and tonally versatile option for their bass guitar.