UP your game with Gravity Dice! We utilize the most advanced 3D modeling and simulation to bring you perfectly balanced dice. Through complex model algorithms we found a balance between great weight, center of gravity and exceptional style. Dice and holder are anodized, aircraft grade aluminum. Magnetic closure. Laser etched dots and logos. Dice size: 0.630" (16.01mm). Holder Size 2.3" x 0.9" (58.4mm x 22.8mm). Style dice: 1 solid dot dice & 1 stroke dot dice.