NIBCO PC604P 1/2″ X 3/4″ PEX X Press Wrot Copper Adapter.

NIBCO press fittings are the fastest, easiest way to join PEX tubing systems. NIBCO Press System fittings are designed to join with PEX tube in residential and commercial water distribution, radiant floor heating, municipal water supply, geothermal climate control, snow melt and drip irrigation. The press fittings can also be installed underground.