Meshech and Tubal
To be people who traded vessels of brass they needed to have the natural metals available in their countries.
Brass is made up of copper and zinc (with different types of brass adding other elements).
By 2,000 BC the use of metals had become widespread throughout an area stretching from western and central Anatolia [Turkey, Georgia, Armenia, Iraq, Iran] across the flanks of the Taurus [Southern Turkey] and Zagros [Western and Southern Iran] mountains and to the edge of the central desert of Iran. - Grolier Encyclopedia 1995