The funnel diameter of this thistle tube is 22mm. The stem is 6mm in diameter and 250mm long. It is made from borosilicate glass. Sold as a case of 100.
PRODUCT WARNINGS
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.