The window breaker can shatter the tempered glass of your vehicle’s side windows, but it is not designed to easily break laminated or plated glass as you find on your windshield and back window.
Because of the blades, it is best if you travel with Auto Rescue Tool in your checked luggage.
First responders recommend you have at least 2 per vehicle, or up to 4 for every passenger in a regular 4-door vehicle, and more for larger vehicles like an SUV.
You can use the adhesive to easily stick Auto Rescue Tool to your dashboard, or use the loop or the arm to attach it to anything. Always have it within arm’s reach while your seatbelt is attached in the locked position.
When you push the steel against the glass, a pin is released with a spring that instantly shatters the glass.
Auto Rescue Tool comes with a small piece of glass to test the mechanism, and it is the only car safety tool that does so.