D'Addario EXP23 Baritone Acoustic Coated phosphor bronze

Coated Phosphor Bronze round wound baritone guitar strings. An micro-fine layer of EXP Coating is bonded to the phosphor bronze wrap wire which is then wound onto the hex-shaped core wire. The result is a built-in barrier against the corrosion and wear that can quickly sap the life out of your strings and your sound.