This item is a fancier screw cap top that can replace the plain disk shaped part in the basic design which may be found here:
https://www.shapeways.com/product/L2NJ6R226/bulkhead-feedthrough-screw-cap
Note that this product is only the replacement upgrade screw cap top. It does not include the bottom part in the basic design that gets glued or epoxied into the hole in a container.