Features: Easy to carry and use. Round Corners for safe use. Make from acrylic materials, reliable, and not easily damage. The dices is smooth and flat, makings it easy to create with writing tool such as colored pen and paint. Can used as a teaching sieves, game color swatches, with diverses functions. You can write or paint according to your personally preference and need, addings creativity and fun. Specifications: Materials: Acrylic Color: White/Black Color/Pearls White/Pearls Black Opposite Side diameter: about 20mm/0.79inch Diagonal diameter: about 24mm/0.94inch Package Includes: 7pcs Empty Blank Dices note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.