A rack to keep weights from rolling or damaging the floor.
The bigger disks thickness is 19mm, its diameter is 180mm and the inside distance between the two disks is 150mm
I've used 10% infill and so far it holds.
The link should clip in the sides and hold itself even if you shake it a little.
I could have printed the whole thing in one part but wanted to try linking two parts, and also the link is a small piece easy to adjust and print in case you need to adjust the total length of the rack