Suspect you are dating a vampire? Whip up a pair of earrings using these and you should be safe. Next time you are asked "Do you vant to go for a bite?" - you can just flash these earrings and smile sweetly. After all, you have a stake in this, right? Everyone needs to be a-Count-able.
12mm x 17mm Hole size is approx. 2.6mm (loop). By the pack of 4.