EPS490 pedal steel strings for E-9th tuning offer a super-bright, crunchy tone and corrosion resistance for longer string life. D'Addario XL ProSteels utilize a highly magnetic, 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. E-9th pedal steel tuning Unique highly magnetic 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 .013, .015, .011, .014, .017, .020, ProSteels Wound .026, .030, .034, .038