Precision Machined and perfectly balanced for a more randomized roll. 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.