These lab-grade cork stoppers are size 3. Size 3 means that the stopper is roughly 3/4" tall, 9/16" in its top diameter, and 27/64" in its bottom diameter. They are sold in a pack of 100 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.