½” Lead-free* F1807 PEX Coupling - The Brass Warehouse
Uponor Wirsbo LF4543850 ProPEX LF Brass Coupling, 3/8" PEX x 1/2" PEX | AF Supply
Apollo 1/2 in. Brass PEX-A Barb x Polybutylene Coupling EPXBC1212 - The Home Depot
The Plumber's Choice 1/2 in. Straight Coupling Pipe Fittings Push to Connect PEX Copper CPVC Brass (5-Pack) 125UPSC - The Home Depot
Apollo 1/2 in. Brass PEX-B Barb Coupling APXC1212 - The Home Depot
WMAXPFIT PEX Pipe Fitting 1/2 inch Set, Brass Push Fit Fitting 1/2 inch Set with 90 degree elbow, tee & coupling, push to connect for quick connection to PEX Tube Pack of 12 - Amazon.com