Ernie Ball Slinky Flatwound Bass Strings combine the smooth feel of traditional flats with the modern power of Cobalt.

Featuring a SuperBright Cobalt Ribbon wrap, Cobalt Underwraps and optimal core to wrap ratio, the new Flatwound Bass strings are the first flat that actually feels like a flat but sounds like a round.

Hybrid Bass Gauges .045, .065, .085, .105