Before playing the game of darts, there are some basics that you should be aware of. These rules are pretty obvious and common in major darts organizations. There is no doubt that you can have 12 inches darts, because it is the maximum size of the dart approved as per rules. The soft tip darts have weight ranging from 14 to 20 grams, whereas the still tip darts weighs 18 to 26 grams. You can also find heavier darts of sale.