As parents, the safety of children has always been a high priority. In particular, children's toys are items that are of special concern. I don't know if you have ever tried to put toys in your mouth when you were little, I remember doing it a lot when I was a kid. Not to mention the 1-2 years old children, curiosity about things, often to make some "dangerous" behavior.

When a child accidentally swallows a toy, is there a risk of choking, inhalation or ingestion due to the small size of the parts.

Small object cylinder is used to test the safety performance of toys in this area, although this item is small, but the precision should be very high.

If any objects can fit completely into the cylinder without compressing & in any orientation, it is defined as a "Small Part". Its internal dimensions simulate the fully expanded throat of a child under 3 years old.

The product model is divided into CPSC and Hasbro, according to the needs of the buyer to provide. At the same time, the measurement standard will be implemented through the buyer's region, to different standards of measurement.

More details refer to http://www.lab-testequipment.com/Small-Parts-Cylinder.html