Mini XLR Dustcap (4pins)

I own a diy cnc milling machine that has some mini xlr connectors for several accessories. As cnc milling is a dusty thing, I was (increasingly) desperate to find a dustcap of some kind. Well, there are some dustcaps here on thingiverse, but unfortunately designed for the regular "big" xlr sockets. No plugs for mini xlr sockets..

These mini xlr plugs have a diameter of 8.4mm. They fit perfectly into the sockets and seal them. No more dust!