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. Sold as a pack of 5 tubes.
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 .
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.