This is a spacer to raise the Cafelat Robot basket so that it fits better under a coffee grinder (in my case a Timemore Sculptor 064s) to reduce coffee grounds falling outside of the basket. The spacer has a height of 35.5 mm and raises the basket to a total height of 93.5 mm.
If your grinder has a magnetic attachment for a catch cup, you can use the 3 mm hole on the spacer's underside for a magnet.
The author marked this model as their own original creation.