Korpa 
Gauges: 45, 65, 85, 105, 125 Bass - Hybrid Nickel - Long Scale - 5-String Set
These strings balance the best of nickel and steel for a warm, punchy low end and an aggressive midrange that puts your groove front and center.
The Long Story
This set of Hybrid Nickel Strings taps into the unique sound and feel of both nickel and steel with a nickel outer layer that provides a big, punchy low end and an inner steel layer that puts your groove front and center with an aggressive midrange. Under the fingers, they’re comfortable to play. From tone to touch, you won’t find a more exceptionally balanced set of bass strings.