a bunch of threaded Boxes with different Caps

Inner/Outer Diameter 14mm
Walls 2mm
Thread M18 like
the thread in the cap has 0.3mm wider Diameter then on the boxes
plz post pics if you made one!
i printed one for a friend and forgot to take a pic...
UPDATE
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added a few more caps with different lenght and shape.
added a few more boxes with different lenght.
added a full plate off all just for the first pic....