CALIFORNIA WARNING: This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
Metal post with round base 6-32 tap and 10-32 thread on bottom.
Overall length is 2-1/8 inches.
Reference:
02-4659-1