Faucet extension (rotatable version)

There are some designs for the faucet extension that you can find in here but all of them are fixed in the faucet once you attach it. I want to make a version that can be rotated in case I need water for drinking for example.

This design has 2 parts, one to be fixed to the faucet (faucetExtensionFixedV2b.STL) and the movable part (faucetExtensionMovedV2c.STL) can rotate about the first one. The cross section of my faucet is 11.5x25mm. I added the FreeCAD file (faucetExtensionFixedV2.FCStd) of