There are 2 kinds of balls of the thing that the thing edited in the stem of 9-11 ratten, and the shape were imitated with the plastic and which was made. A ball made of the plastic is being used as an official ball from the 11th Beijing Asian convention.
The weight of the ball is 170g-190g, and the size of it is a perimeter 40cm, and there is a hole of 12 in it. It is much smaller than a handball, a little bigger than a softball.
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