Summary

Mini fidget spinner! Uses 623ZZ size bearings (3x10x4)
Includes cap that fits the bearing.

Spinner is about 43mm across and 4mm thick. With the caps on, it's about 9mm thick.

Bearings that I used:
https://www.aliexpress.com/item/10pcs-lot-623ZZ-bearing-623-ZZ-3x10x4-Miniature-deep-groove-ball-bearing-623-2Z-ZZ-bearing/32284920589.html?spm=2114.13010608.0.0.8BNakG

Print Settings

Rafts:

                                            <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>I printed in ABS, and I had to enlarge the spinner by 2.5% for slicing to fit the bearing. The caps didn't need any size changes. YMMV. </p></div>

How I Designed This

Fusion 360 and Tinkercad

            <div><p>Used Fusion 360 to design the spinner, and Tinkercad to design the cap.</p></div>

Mini Fidget Spinner