This Small Item Tester (also known as a Small Objects Choke Tester), was designed by the CPSC [the Consumer Product Safety Commission (cpsc.gov)].
It allows testing the safety of small toys, toy parts, or other small objects. If an object fits entirely inside the Small Objects Choke Tester, then it’s a choking hazard for a child.
A child safety must if you have, or care for, children under three years of age.
Learn how to administer Choking First Aid to an infant up to a three year old child under the “Child Safety Info” tab on this website.
Empowering Through Education to Improve Child Safety