Gauges 40-60-75-95. DAddario EXL220 XL Super Light Bright Electric Bass Strings are among their most popular round-wound, nickel-plated bass strings. World-renowned as "The Players Choice" among bass players of all genres and styles. EXL strings are wound with nickel-plated steel, known for its distinctive bright tone, excellent intonation and reduced fret wear. DAddario is the worlds largest manufacturer of strings for musical instruments. Many top guitarists wont play any other brand. Regardless of your playing style, DAddario has a set of bass strings thats right for you.