【Portable Design】: The tool is compact measuring only 3.5 inches in length making it easy to carry. You can attach it to your keychain or secure it in your car with adhesive tape ensuring easy access in emergencies. (Note: This tool is suitable for breaking tempered glass in car side windows but not for laminated glass like windshields.)<br>【Powerful Impact】: Equipped with a tungsten steel hammerhead and high-pressure spring the hammerhead automatically strikes when pressed easily breaking windows. This tool can deliver up to 20KGF of impact force in just 0.1 seconds effectively shattering car windows. (Note: The metal tip remains inside the tool and only pops out when breaking glass.)<br>【Safe and Easy to Operate】: This tool focuses on breaking tempered glass and the U-shaped cutting knife design makes cutting seatbelts easy and safe. Simply aim and push and you can escape smoothly while protecting your hands.<br>【Efficient Escape】: As a two-in-one escape tool carrying this product can help you quickly flee the accident scene in emergencies saving valuable time and increasing your chances of survival.<br>【Sturdy and Durable】: This glass breaker is made of high-strength materials specifically designed to handle emergencies. Its exceptional durability gives you confidence in crisis situations allowing you to exit your vehicle quickly and safely.【This set includes one piece Safe Hammer】