DADDARIO / EXL115BT XL Nickel Round Wound Balanced Tension Medium. Purchased from Sound House in July 2023 and stored unused. The following is the description from Sound House: DADDARIO's EXL115BT, a standard electric guitar string loved by guitarists around the world, is a Balanced Tension Medium gauge. The orthodox nickel wound provides a bright sound that suits various playing styles. ■ Electric Guitar Strings ■ XL NICKEL ■ Nickel Round Wound ■ Balanced Tension Medium ■ .011, .015, .019, .028, .037, .050 ～D'Addario XL NICKEL～ DADDARIO's XL NICKEL series, a standard electric guitar string that is loved by guitarists around the world and continues to gain overwhelming support. The orthodox nickel wound provides a bright sound that suits various playing styles.