With the spiral movement of the aisle,the ball bearing will get closer to the center.And when the time is 11:59,the ball will roll to the hole.At the time of 12.It starts again from the bottom out of circulation.
Is it special?I think we can get one in our home.But it is also expensive.It costs £ 350.




Copyright 2010 by Green,Loving travelling and all beautiful things.Such as the juicy couture sandals and Lv bags.
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