Pistol style working principle: This car safety hammer adopts the pistol style working principle, which can produce a strong impact instantly, feels comfortable and is not easy to slip off A window hammer: double side head with hardened strong stainless steel tips breaks vehicle windows and belts in an emergency. Safety cutter: This car safety hammer is fully functional and has a safety cutter that can cut the stuck seat belt. It does not take up space. This car safety hammer has a compact design and can be placed in a storage box next to the driver's seat or stored in the center console. It does not take up space to prevent emergencies. Easy to use: pistol spring, smart chain to break the window, not afraid of water pressure, can easily break the window in the water, can be used directly in the water under any circumstances, which greatly increases the chance of escape