EJ22, D'Addario's heaviest gauge "jazz" set, is preferred for its wound 3rd/G string, dense tone and tight feel. Can also be used for down tuning. XL 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.