Dremel Impeller Lock, spacer and nuts

This is a lock for https://www.thingiverse.com/thing:3361596
For when you don't have screw or you want a fast assembly and disassembly.

I also added a spacer model and nuts for M4 and M5 screws
Is it called spacer or separator? It is for when you have longer screw.

I printed them on PLA.
Print it on it side (as it comes), with supports. this gives it the most strength, and tenacity.