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.

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.

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• Medium gauge

• 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 .011, .015, .019, ProSteels Wound .028, .037, .050