To avoid major print issues, the die is 2cm x 2cm x 2cm. If you want to, you can scale it down in your slicer to 75% scale, which is the size of a standard die. (1.5cm x 1.5 cm x 1.5 cm)

It is also recommended to clip off the corners, as it is quite sharp. I didn't cut off the corners of the 3D model because it is your choice if you want it sharp or not.