They now feature plain strings and hexagonal cores made from their revolutionary NYXL High Carbon Steel.
Finally! Coated strings that deliver 4 times more life, completely natural tone and the feel of uncoated strings. D'Addario EXPs deliver the most natural-sounding, longest-lasting coated strings available. These extended play strings sound identical to D'Addario's world famous uncoated phosphor bronze strings. Deep, Bright, and Projecting Tone.