These clips are meant to secure the connection of two ground glass joints. Use on 19mm joints.
PRODUCT WARNINGS
WARNING: This product can expose you to chemicals including styrene, 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.