Nunn Design Brass Ear Wires are lead-free and manufactured in the United States of America. Nunn Design ear wires are electroplated in the USA using nickel free precious metals; copper, 24k gold and .999 fine silver. The process of plating is very involved and requires many painstaking steps. These steps add to the quality that Nunn Design is known for. To learn more about our plating process, visit our FAQ section.