Sink Strainer 49mm 50mm with Retaining Tab

Migrating from thingiverse

https://www.thingiverse.com/thing:4362313

Original here
https://www.thingiverse.com/thing:3797754

Added the retaining tab to prevent it from sliding out.
happens when trowing large amount of water.

especially for sink that only have one sick, preventing air from escaping from the other side.

drain much better/faster than the metal OEM strainer.

FeeCAD file included