Ernie Ball Hybrid Slinky Flatwound Bass Strings combine the smooth feel of traditional flats and the power of Cobalt. Featuring a SuperBright Cobalt ribbon wrap, Cobalt underwraps and optimal hex-core to wrap ratio, the new Flatwound bass strings are the first flat that actually feels like a flat and sounds like a round.
Gauges .045, .065, .085, .105
Looking for a lighter gauge string tension for your bass? Try the Extra Slinky Flatwound Bass Strings , at 40-95 gauge they will give you the silky feel of flats, but a sound more closer to using Roundwound strings.