1/2" PEX Brass Drop Ear 90 Degree Elbow, Lead-Free, Crimp x Female Iron Pipe (Installation by Non-Professional may void Viega's LLC limited warranty) Reviews
“Hard to find, but 3/4 pex and 1/2 NPS have about the same inside diameter at the connections. When appropriate, using 3/4 pex will avoid any constriction.”
“This piece is great. You can attach pex tubing to the one part, screw in 1/2" pipe to another part, and secure it with screws. It works great with no leaks!”