I searched a lot on internet and couldn't find any Wiha slimBit to standard Bit adapter to use with my Wiha Speed-E or whatever. So I created it by myself on Autodesk Fusion 360. After 6 versions of testing and printing it became almost perfect.

Use Ultimaker Cura to slice and keep in mind to keep slimBit "head" up (Z-axis) when slicing / printing (see screenshot attached).

More versions and variations are coming up...

Any comment is appreciated!