Copper Rod

The sole known use of this item is in the creation of the Runed Copper Rod, used in enchanting. It can be purchased from most enchanting and trade goods suppliers. Of all the kinds of rods used to create enchanting rods, this is the only one that is not created by a blacksmith player.

Source
This item can be purchased for from:

Copper Rod as an ingredient
This item is used to make:
 * Runed Copper Rod