Adamas Single string Nuova coated phosphor bronze - .085in./2,16mm (wound)Single strings of the Adamas Phosphor Bronze Nuova Coated series Solid brass ball end, High End Premium Phosphor Bronze, coated ultra thin nano coating less than 1 Micron = 0. 001 mm is applied to the winding wire and core before the string is wound Specially modified coating alloy with high copper content Warmer, fuller, earthier tone