Made of strong ABS plastic and carbon steel ball bearing in the center for an approximate spin time of 2 minutes.  Increase your concentration and focus, relieve stress and enjoy this fun item for hours on end.  

Item dimensions:  3" X 2.75" X .3125"

Note:  Item contains small parts and is not intended for children under 3 years of age.

Kumon logo on center piece (not customizable with Center information)

Item will be purple with lime center

Production time is 5-7 days.