This is a Geneva Wheel Mechanism set up for 5 stops. It will need (2) M3x.5 @ 10mm screws, for which I highly recommend pre-tapping the holes in the base. They're modelled threaded, but threads that fine often need a little help.

This model is roughly the same style and size as the collection of simple mechanism models by Adam. I highly recommend a look!

https//:www.printables.com/@A548