Any HU fans out there? This is a fridge magnet and/or coaster with the HU logo on it.
In the print profile you will find a coaster option as well as a magnet option with an embedded cavity and corresponding pause for inserting it. The magnet cavity size is 20x10x2mm (Amazon link: https://a.co/d/8r86Cvo).
Check out my other fridge magnets that use the same size magnets - https://makerworld.com/en/models/90339#profileId-96736.