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This gaming die is balanced in the sense that the number holes removed on each face of the die are designed to be of equal volumes and therefore equal weights. The inside of the die is completely solid.
Three sizes are available:
small = 0.64 inches (1.63 centimeters) medium = 0.82 inches (2.08 centimeters) large = 1.0 inches (2.54 centimeters)