Mercedes EIS removal and installation tool

This is a tool to help spin the retainer ring for Mercedes-Benz electronic ignition system modules. You can use a 3/8" or 10mm ratchet on an extension just like the official MB tool. Don't use screwdrivers (like in the video) ever again!
https://youtu.be/e2_kdJgO6iY?t=30

You can buy metal versions of these tools on Amazon - but why?

Applicable to several Mercedes cars including R350 R320 ML350 from the 2006-2020 era.