D'Addario EJ82C Viola Brasileira strings are manufactured from nickelplated steel wound strings and tin plated plain steels, optimized for Cebolao Mi and Boiadeira. D'Addario offers a wide variety of ethnic instrument strings designed to the exacting specifications of our artists, instrument parterns and international customers. Our computer-controlled winding machinery, laser micrometer inspection, and closed-loop tension control systems promise unrivaled quality and consistency, set after set.