This is a Brass 3/8" Push to Connect to 3/8" Push to Connect fitting. Perfect for joining two pieces for 3/8" air line. Also good for running air line through solid objects without using grommets.
This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.