I use 2 of these to hold my bike rack on the garage wall when not in use. The diameter of the foam padding is about 52 mm. The larger file is one that I smoothed in Fusion 360 but I haven't got round to printing it yet as I already printed enough for myself.

Print Settings

Printer Brand:

Prusa

Printer:

Any

Rafts:

No

Supports:

No

Resolution:

0.2

Infill:

25