Donic 3star balls was used in the 1995 World Championships! A selection of raw celluloid material according to hardness and color selection of the pre-cut ball halves according to thickness and weight.
Control of the ball seam and selection of the ball diameter is (all around).
Selection of the ball according to the weight, triple control and selection by roundness, control of bounce regularity. The overall result: A ball that is great in precision, consistency and regularity.