How big the needle is!
So, for you curious folk (and don't be ashamed - I'd, of course, ask too), here's the best I could do.
My warning - look away if you hate needles.
I know there is no point of reference here, so it's hard to really see the size. The needle injects about 1.2 cm into me if that helps. This is the needle tip (it comes with a cap so I can handle it safely) that gets inserted into the auto-injector - and gets disposed of afterwards. The multi-dose cartridge stays in the machine until it is empty and I need to insert a new one.
If you have any other questions, feel free to ask.