Ernie Ball 2812 REGULAR SLINKY FLATWOUND ELECTRIC BASS STRINGS - 50-105 GAUGEErnie Ball 2812 Flatwound Regular Slinky Cobalt Electric Bass Guitar Strings 50 105Ernie 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. PO2812Gauges . 050 . 070, . 085, . 105