Review on Yuanhe Set of 5 Grade AAA 19mm Serialized Casino Dice with Pristine Razor Edges and Corners (In 5 Vibrant Colors) by Jose Haskin

I measured all 6 sides of all 5 cubes (total 30 measurements). Each of them measured 19.5 mm or very close to it. A deviation of 0.5 mm is more like a deviation of 0.02 inch, which is much larger than the specified tolerance of 0.0001 inch. However, they are square in the sense that each dimension is larger by about 0.5mm. These dice are good enough if you play dice at home, but they are NOT of the quality of casino dice and SHOULD NOT be advertised as such.