Product Description Product Specs/Additional Information Related Videos Audio Product Description Ernie Ball 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:Super Slinky – .045, .065, .080, .100Hybrid Slinky – .045, .065, .085, .105Slinky 5 – .045, .065, .080, .100, .130 Product Specs/Additional Information Related Videos Audio