These lab-grade cork stoppers are size 5. Size 5 means that the stopper is roughly 7/8" tall, 11/16" in its top diameter, and 17/32" in its bottom diameter. They are sold in a case of 1000 stoppers.
Follow this link to see our Cork Stopper Size Chart.
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.