Supersize Rotary Fidget

Here is the latest rotary fidget toy from Nalan Engine LLC. It's 100 mm OD, compared to the previous one - http://www.thingiverse.com/thing:2135945 - which was only 60 mm OD.
Larger radius for the spinning mass will increase inertia, hence it'll spin longer. Vertical ribs are removed which decreases aerodynamic drag, bridges are placed between the spherical ends which will eliminate wake turbulence. not as handy as 2135945 but spins longer. Also quieter.
It uses 3x8x4 miniature ball bearings.