This is an Ever flow straight coupling with banded female threaded ends, which are 1/2 inch in size, with one having a standard thread, and the other a left-handed thread. The fitting is made of malleable iron, with a black coating, and is suitable for applications with pressures up to 150 lb. It is produced in a Iso9001:2000 manufacturing environment and was pressure tested before leaving the factory. Ul/ulc and fm approved the designed for meeting the astm a-197 and ansi/asme B16.3 and B16.14 standards. ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.