EXL130 Extra Super Light 8-38 D'Addario XL Nickel Wound Electric Guitar strings are world-renowned as "The Player's Choice" amongst players of all genres and styles. XL's are precision wound with nickelplated steel on a hex-shaped core, resulting in strings with a distinctive bright tone and excellent intonation. Diameter Tension Item# Note inches mm lbs kg PL008 E 0.008 0.2 10.4 4.72 PL010 B 0.010 0.25 9.1 4.13 PL015 G 0.015 0.38 12.9 5.85 NW021 D 0.021 0.53 12.0 5.44 NW030 A 0.030 0.76 14.0 6.35 NW038 E 0.038 0.97 12.1