Precision backgammon dice are manufactured to ensure that all rolls are completely random. Typically, precision dice are made by drilling each spot to an exact depth. The holes are then filled with an epoxy or paint. The filler equals the weight of the material removed by the drilling. The corners are also rounded to ensure that the dice are more likely to roll than bounce. Precision backgammon dice will be preferred by all serious players and may be a requirement for tournament play. In simple terms, precision dice facilitate fair play because the dice rolls are truly random. Because the doubling cube is never rolled during play, there is no requirement for it to be manufactured to precision standards.