Fidget spinner created with VECTARY - the free, online 3D modeling tool, 3D printed on Formlabs.
You can freely customize the original 3D model here: https://www.vectary.com/l/fidget_spinner
For holes use classic bearing ABEC 5 with diameter 22 mm.
I screenrecorded the design process for VECTARY tutorial. Enjoy: https://youtu.be/W2WiYeDbdHA
I'm an automotive design students. Currently discovering the possibilities of VECTARY software and 3D printing.