3 Pack! GameScience: Coal Black D20 Polyhedral Dice - Opaque Un-Inked Precision Edge Dice - 3 Piece Bundle Set of Three (3) Opaque Coal Black Gamescience D20 Polyhedral Dice GameScience makes Precision dice that will role true every time. Color Your Numbers Yourself! Edges are sharp, as these dice are not tumbled like most brands. Lack of tumbling leaves a small imperfection on each dice that can easily be polished down Numbers are impressed in the plastic, but not inked or colored - Customize Your Dice Yourself! Nice!