Preformed copper 90-degree elbows adapt PEX or copper pipe to the shower mixing valve inlet (sweat / male or female thread). Solid copper pipe with no elbow minimizes pressure drop and eliminates at least (2) leak paths. Inlet optionas available: PEX crimp, PEX-A F1960 expansion and PEX press inlet. Outlet options available: copper sweat (male), male (MIP) or female (FIP) swivel threaded.