1.Window breaking seat belt cutter: This 2in1 car glass breaking tool and seat belt cutter use ultrahigh pressure springs and sturdy tungsten steel blades, with a hardness of an astonishing 70HRC. It can provide instantaneous impact force, quickly breaking windows within 0.1 seconds with an impact force exceeding 20LB. The tungsten steel blade is hidden inside the tool and only pops up when in use. 2.Seat belt cutter: In emergency situations, simply align the Ushaped hidden blade of the glass breaker with the seat belt and quickly push it forward to quickly cut the seat belt and leave the car quickly. The hidden design ensures that the blade does not harm hands while cutting. 3.Designed specifically for cars, the Safehammer Glass Breaker comes in a set of 4, ensuring that you and your passengers are always prepared in case of an emergency. Whether you find yourself in a submerged vehicle or need a quick exit from a dangerous situation, this tool has got you covered. This multifunctional hammer is an essential addition to your automotive emergency kit. 4.Car window breaker:Don't wait for an emergency to happen, be proactive and equip your car with the Upgraded Safe Hammer Glass Breaker Under Water. Stay and be prepared with this musthave automotive emergency tool.