608, 625, & 607 bearing Concave Surface Fidget Spinner Buttons MK3.1 (Press Fit)

*UPDATE* Another member pointed out that my models weren't perfectly on the bed in the design, which most decent slicer programs would point out to you and/or automatically correct. So I put them on the bed and re-uploaded everything.

*UPDATE*
If you find these fidget spinner buttons well designed and useful, please leave a $1 tip to encourage me to create more. I'm happy to redesign these for any bearing size. I also have a project in the works to create a Fidget Spinner Customizer. S