D'Addario's coated EXP strings are equipped with the plain steels and hexagonal cores of the revolutionary NY strings. These carbon steel wires offer tremendous tensile strength and tuning stability. Combined with high-quality winding materials, precision-wound and ultra-thin coated, they deliver a tone similar to uncoated strings with up to four times the lifespan. Significantly higher durability than standard strings. Extra bright tone with deep and projecting bass response. Gauge: .010 .014 .023 .030 .039 .047.