D’Addario epands its ProSteel Electric Guitar line with the new EPS515 ProSteels Medium, in gauges .11 - .50.  D'Addario XL ProSteels utilize an exclusive corrosion-resistant steel alloy that delivers super-bright tone without shrill overtones. These strings are designed to offer a palette of harmonically rich, penetrating highs combined with pronounced lows.

Retail price: $10.95.

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