The main rule for using a double bit axe for axe throwing is that the thrower is only allowed to hit the target with the fore-bit of the double bit axe and not the back-bit. Also, the axe needs to be stuck in the target area with the fore-bit. The double bit axes used for axe throwing have symmetrical blades on both sides so that they have a well-positioned center of gravity to ensure the proper distribution of weight. This enables the axe to rotate properly. Additionally, there are certain restrictions on the design as well as the dimension of the double bit axes in several axe throwing competitions.