Boat propeller

This is a simple, 3d printing friendly propeller. I had a broken boat propeller and I replace it with these parts.

In the .3mf file there are one of them according the .stl, the other one is a mirrored (in Prusa Slicer) geometry.

Check the drawing for the sizes. 

If you need a slightly different one, wrote it in the comment and maybe I can regenerate them.