Strings for electric guitar. EPS530's offer a super-bright, crunchy tone and corrosion resistance for longer string life. D'Addario XL ProSteels utilize an exclusive corrosion-resistant steel alloy that delivers super-bright tone without shrill overtones. They offer a palette of harmonically rich, brilliantly penetrating highs combined with pronounced, tight-and-tough lows. Extra-Super Light gauge offers brighter, crunchier tone and increased sustain. Gauges: . 008, . 010, . 015, . 021, . 030, . 038