Metal strings for 12-string acoustic / western guitar made of bronze. Thanks to the precise construction and unique properties, the sound and aesthetic level of your guitar will last incredibly long. The special POLYWEB technology guarantees your guitar a long-lasting and unmistakable sound. String thickness: .010 / .010, .014 / .014, .023 / .009, .030 / .012, .039 / .018, .047 / .027, Designation: Light