A Chessex Gemini Polydice Set - Astral Blue and White with the numbers inked in Red.

A set of seven Gemini acrylic polydice, supplied in a protective acrylic box.

The set contains of one each of 4, 6, 8, 10, 12 and 20 sided dice plus a percentile die (a 10-sided die marked in increments of 10 from 00-90 - rolled with a normal 10-sided die, this gives numbers from 00 to 99). This composition of set is that used as standard in a wide variety of roleplaying games including Dungeons & Dragons, Pathfinder etc. In terms of size, the 6-sided dice are approximately 14mm on a side, and the 20-sided dice are approximately 20mm in diameter.