EXL125 is D'Addario's best selling hybrid set, combining the high strings from an EXL120 (.009) with the low strings from an EXL110 (.046). The result is a set with strong fundamental low end, but with super flexibility on the high strings.Hybrid gauge combines EXL120 for flexibility and EXL110 for more solid low endRound wound with nickelplated steel for distinctive bright toneEnvironmentally friendly, corrosion resistant packaging for strings that are always freshMade in the U.S.A. for the highest quality and performanceString Gauges: Plain Steel .009, .011, .016, Nickel Wound .026, .036, .046XL Nickel Wound, D'Addario's most popular electric guitar strings, are precision wound with nickelplated steel onto a carefully drawn, hexagonally shaped, high carbon steel core. The result, strings with long lasting, distinctive bright tone and excellent intonation, is ideal for the widest variety of guitars and musical styles.