Koplow Games 10-Sided double dice, set of 10-sided double dice game (die within a die). Ideal for ages 6 - 11 and grades 3 and above. Dice helps to understand basic math functions, practice basic math functions, create percentages, and enhance games and activities. The clear outer die helps view the inner dice. Bag of 6 10 sided double dice. Warning: Choking hazard, small parts, not for children under 3 years. Each individual set contains 6 Dice, Bundle of 6 sets, 36 Dice total.