The car glass breaker just takes 1 second to break car’s side window, Built-in sharp cutter, no need to force, cut the stuck seat belts safely and quickly.Small volume.Tungsten steel head, tungsten steel rockwell hardness reaches 55, strong spring loaded, 20 lbs strong explosive force, set a powerful impact at one point, hit the black end against the window, break through the water pressure.It instantly caused the tempered glass to shatter, all male and female can do the job.Be noted to choose breaking the tempered side glass rather than the laminated glass such as the windshield and skylight, which is difficult to punch through.Do not press any part of your body and keep away from kids.