t's pretty much a holder 38mm ball bearings holder. holders 10 of the 38mm bearings.
Decided to make this holder after seeing a video ( https://www.instagram.com/reel/C0f6zw6NuM2/?igshid=NGEwZGU0MjU5Mw== ) of them using the 38 mil ball bearings as a weight inside a spool inside the AMS to save it lifting and getting jammed.
As one of these ball bearings are 200 + grams weight.

Thinking and how to store the balls bearings when not getting used