Round copper beads by C-Koop Beads feature torch-fired glass enamel colors on a corrugated spherical copper base. Some beads appear more corrugated than others due to the varying thickness of the enamel. This handmade variance adds to the aesthetic appeal of these colorful USA-made beads. With an approx. 1.4mm hole, these beads work great on several types of stringing material. A wholesale price break for bulk purchases is listed next to each item.