EPS520'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. If you're looking for more crunch, bite, and sustain, ProSteels are the choice for you. Super Light gauge Exclusive corrosion resistant steel alloy offers brighter, crunchier tone and increased sustain Environmentally friendly, corrosion resistant packaging for strings that are always fresh Made in the U.S.A. for the highest quality and performance String Gauges: Plain Steel .009, .011, .016, ProSteels Wound .024, .032, .042

Electric Guitar String Set, Pro Steels 0.09 - 0.42 Super Light Gauge from D'Addario is 100% original and brand new. We, at Melody House take pride in our after sales service and support. For further details on the Electric Guitar String Set, Pro Steels 0.09 - 0.42 Super Light Gauge, D'Addario, simply write to us to consult an expert or order online and we will take care of the rest. Happy Shopping!