D’Addario NYXL Light Top/Medium Bottom Long Scale 5-string bass guitar strings provide higher break strength, enhanced tuning stability and accentuated harmonics where it counts. Using an NY steel core, Fusion Twist technology, and premium nickel-plated steel wrap wire with a reengineered core-to-wrap ratio, NYXL bass guitar strings deliver extra versatility, familiar feel and a boosted tone that’ll expand the scope of your low end. Made for 5-string basses, this 45-125 Light Top/Medium Bottom 5-string gauge has slightly thicker A and E strings, and a slightly thinner low B string than Regular Light 5-string sets.