These lab-grade cork stoppers are size 13. Size 13 means that the stopper is roughly 5/4" tall, 73/64" in its top diameter, and 15/16" in its bottom diameter. They are sold in a case of 1000 stoppers.
This product contains small parts, making it a choking hazard. Only use with adult supervision.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.