Ernie Ball Nickel Wound 6-string Electric Bass Guitar Strings are made from nickel plated steel wrapped around a hex shaped steel core wire. Each bass guitar string produces a bright, balanced tone. Designed for basses with a 34 inch scale, the overall string length is 48? and the taper begins at 37 1/4". Gauges .032, .045, .065, .080, .0100 .130