Bear Bangers are packaged 6 to a box. They each weigh about 12 grams and have a height range of between 20-30 meters with 0.8-1.0 second time delay. The Bear Bangers are designed to produce a very loud bang in the atmosphere. This bang will alert potential predators of humans in the area. They can also be used to alert or signal prearranged messages between parties. Should be used with our Pen Launchers.