This physics ball set contains ten 25mm balls – seven drilled balls (aluminum, brass, copper, steel, zinc, wood, cork) and three hooked balls (brass, steel, cork).
PRODUCT WARNINGS
WARNING: This product can expose you to chemicals including lead, 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.
This product consists of small balls, making it a choking hazard. Only use with adult supervision.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.