This is a small spinner for kids hands. For my daughter (5 years old) it fits perfect. Sure the spinning time ins´t so long as with usual spinners. But the fun factor is the same ;o)
The total diameter is 60mm.
It depends of two halfs, 6 heart inlays, 2 finger tips, 6 M5 nuts and one 625 bearing.
The small red hearts fit perfectly without gluing. After assembling I glued both parts with superglue and fixed it for a while with a clamp.
Maybe you need to remove sharp edges of the parts. It helps to snap in the small hearts easily.