They're from Peru. They're ceramic. They're handpainted. Drilled side to side, neck to neck. Looks like a real bat, the kind that lays eggs in your hair. Roughly 1.25 inches wide, 1 inch high. PCB's - Peruvian Ceramic Beads. Some of the PCB holes will take a 2mm cord, some just close to a 2mm cord. Sold in units of 5 so to buy 10 choose 2 units, to buy 100 choose 20 units. The supplier to the universe for this item JP Imported has called it quits so as of 9/17/20 I may be selling the last of what is available to me.