Precision Gem 7 Piece Dice Set, including d6, d4, d10 (0-9), d12, d20, d10 (00-90) and d8. Dice are colored (in title description) with impressed numbers (not inked). Manufactured by GameScience in the USA. NOTE: Lack of tumbling leaves a small imperfection on each dice that can easily be polished down with model-grade sandpaper. These dice are customizable as you can create your own unique custom dice by choosing the color that best suits your personality.