GHS Strings 5M-DYB 5-String Bass Boomers, Nickel-Plated Electric Bass Strings, Long Scale, Medium (.045-.130) Model: 5M-DYB 5-String Set Roundwound Nickel Plated Steel on Strengthened Core The classic POWER string for increased brilliance, volume, sustain and strength. Medium Gauge: 045-065-085-105-130