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Introduction:No need any medicine and mark advance in the dices. Just wear contact lenses may be directly see through the Perspective cup.
The appearance of dice is the same as the normal, to show the odd number or even number that you can control what they are.
Working Procedure:
Lead was added into the dice and used to balance the dice.Knock at the dice that the side of you want to show before you throw out.
Used for:
Private Mahjong gambling, Party gambling, rivate casino, Mahjong match, Magic show,ect.
