I initially needed wheels to raise the Drying Rack from the ground to prevent the cleaning robot from going over all the time.

I found a perfect “DryWheels” design here https://makerworld.com/en/models/85049#profileId-90915

I printed the DryWheels in TPU so then it was necessary a stopper to keep them in place.

The file contains 4 stoppers 16mm internal diameter for traditional drying racks and 4 stoppers 7% smaller for smaller drying racks.