Stay safe and confident during your outdoor adventures with the Tru Flare Hunting Bear Banger Signal Cartridges. Ideal for hunters, campers, and hikers, these cartridges work with the Tru Flare Pen Launcher to deter bears, cougars, and other wildlife before they get too close. Simply fire the cartridge to alert or scare off animals with a loud bang, providing peace of mind before you explore further. Pen Type launcher size M9x1