The file 'Office Chair Foot 3D Printer Model' is (stl) file type, size is 8.0KB.
I fixed my office chair with this thing.
It strengthens chair leg, works as a foot and fits with enough friction to keep it in place.
Since I don't have a caliper yet, I needed to do several iterations until it's done.
Its outer diameter is around 38 mm.
office-chair-foot.stl | 39.9KB |