This set of 8 dice is the perfect solution for all games that require +x/+x modifiers. The range of numbers allows modifications from -6 to +6 and is a perfect addition to any card game. The dice come in a size of 16mm, positive numbers are white, negative ones are black.Packaging is a handy plastic tube that contains 5 positive (+x/+x) and 3 negative (-x/-x) dice.