PURE BLUESâ„¢ Electric Guitar Strings are constructed with a pure nickel wrap wire on a round core wire to produce a distinctive warm and balanced sound with rich overtones and a vintage vibe. They create the unmistakable tone and feel of classic American rock and blues with chords that ring out sweet and round, while leads have more punchiness and sustain. They feel smooth and playable with a remarkably responsive touch. <> String Length: 38" <> Material: Pure Nickel. Round Core Wire with Ball End. <> 10 13 17 30 44 52