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.
• 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