Product DescriptionNW021 is a 021 gauge nickel wound electric guitar string Perfect as a replacement string or for creating custom sets Part of the best selling XL string seriesXL Nickel Wound, DAddarios 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 stylesDAddario, the worlds largest manufacturer of musical instrument strings, is known as The Players choice with a reputation for unsurpassed quality and consistency DAddarios innovative, environmentally friendly packaging reduces waste and provides protection from corrosion All DAddario strings are manufactured in the USA using proprietary, digitally controlled, state-of-the-art machinery for unmatched performance, set after setFrom the ManufacturerNW021 is a 021 gauge nickel wound electric guitar string Perfect as a replacement string or for creating custom sets Part of the best selling XL string seriesXL Nickel Wound, DAddarios 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 stylesDAddario, the worlds largest manufacturer of musical instrument strings, is known as The Players choice with a reputation for unsurpassed quality and consistency DAddarios innovative packaging reduces waste and provides protection from corrosion All DAddario strings are manufactured in the USA using proprietary, digitally controlled, state-of-the-art machinery for unmatched performance, set after set