Drive shaft for Bosch MUM Multimixer attachment

Had a broken drive shaft for the Bosh MUM (series 8 i believe) Multimixer, so I modeled a new one.

I suggest printing it as is which uses the least amount of supports but printing in upside down might also be a good idea although you'll need more supports. I printed it on my Prusa MKS3+ with PLA and 0.3mm layer height, which turned out fine, but PETG might be a better idea.

This is quite a complex part (at least with my limited experience with 3D modeling)  and since I haven't extensively tested it any feedback is appreciated. This is also my first published 3D model so any tips and constructed criticism is more than welcome.