Handing out these tokens when players gain an action point is a great way for the DM to track how many they have. When a player spends his action point, he returns the token to the DM. Or, as a player, you can simply turn the token upside-down when you use an action point, to indicate it's used up.
Made from acrylic, this token comes as shown in the pictures: engraved, paint-filled and ready to use on the game table.