WHK 10 PACK PEX Fittings 1/2 Inch X 1/2 Pex Drop Ear Elbow Female NTP Thread Adaptor,Use for Pex Pipe 1/2 Inch Fittings Connect and Fix Tub Spout,Shower Head (Brass) - Amazon.com
Viega Part # 49403 - Viega Pureflow 1/2 In. Press Polymer Coupling Fitting - Pex Couplings - Home Depot Pro