Wheel base - without wheel

You can insert a wheel in the middle. Have modeled this to replace a broken one from a piece of furniture, and have been asked to share the model, so here I am :-)
The model does not have the wheel itself, does not turn on the top, and you might need to adjust the file for your specific use.

Have included the STL, Cura with the solid mod, and the Blend file to modify it (Blender 4.5+ required, modeled in 5)