Wheel for flower stand

We bought a new flower stand with 4 wheels. The wheels should be push fit to the stand, but they were so tight I managed to break one immediately...

So dismantled the broken wheel, designed and printed a replacement for the broken piece. The actual wheels from the original were fine so they were re-used with the printed piece.

The inner radius of the wheel cover is 22mm, thickness 2mm. The hole radius for the connection to the stand is 3.5mm. The axle radius hole is 5.2mm.