Medium chain - alternating coloured links

A medium sized chain with links of alternating different colours.

Each link is 20mm x 13 mm, based on a Ø4 wire size.
You end up with 100 links if you use them all. This is an extremely compact way of making a continuous chain with alternating links. You can make any length of chain by linking in chains as you build.

This is the sister part to https://www.thingiverse.com/thing:2848863

So the way this works is:
•do one complete print in one colour. This will give you 50 'yellow' link