Open Chain Link

I have tried to produce a chain link which is functional, easy to print and easy to assemble which allows the easy addition of additional wires if required. I looked at and tried many variations of chain link before I produced the one here using ideas gained from other chain links available in Thingiverse.

I am open to ideas from others for additional end fittings but as the connector ends are common to most other chain links most end fittings are available already.