Double square adapter

Double Square drive adapter.
For sizing at present, proof of concept and materials testing.
PLA will not be strong enough - probably.

Additions to come:-
For 3/8" hex drive (i.e. standard ratchet)
10mm shaft drive (i.e. for drill chuck)

Edit 12/05/21
Final double hex drive files added for socket drive and drill drive.
For use on boat winch.
it's just a design project, it will work on a very light load with pla home print.
The design may help in the manufacture of something more up to the task.
Not progressed with any further testing.