The funnel diameter of this thistle tube is 42mm. The stem is 6.6mm in diameter and 230mm long. It is made from polypropylene plastic.
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.