Elixir Strings Phosphor Bronze 12-String Acoustic Guitar Strings w NANOWEB Coating, Light (.010-.047) 12-string acoustic guitar strings constructed with phosphor bronze wrap wire Played for a dynamic balance of rich, full-bodied tone and sparkling high-end clarity Ultra-thin NANOWEB Coating provides a traditionally textured, uncoated feel Our patented coating technology protects against common corrosion, extending tone life longer than any other brands coated or uncoated strings (Elixir Strings player survey) 12-String Light gauge: .010/.010 .014/.014 .023/.009 .030/.012 .039/.018 .047/.027