This hook is attached to a collar that fits around a support stand rod. There is a 19mm inside diameter. Its uses are up to you. Support stands sold separately.
PRODUCT WARNINGS
WARNING: This product can expose you to chemicals including nickel and 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.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.