SEAT BELT CUTTER: The car safety hammer features a built-in sharp stainless steel blade with a hidden U-shaped design to enhance user safety and reduce the risk of hand injuries. To use, simply position the U-shaped blade against the seat belt and push forward to quickly cut through a jammed seat belt. LIGHTWEIGHT AND PORTABLE: This car escape tool measures only 3.6 inches, making it lightweight and compact. It does not take up space in your vehicle and can be attached to a keychain for easy carrying. Each safety hammer comes with a base that can be affixed to your car using the adhesive backing. Consider purchasing multiple units for front and rear seat accessibility. CAR WINDOW BREAKER: This 2-in-1 safety hammer includes a high-pressure spring mechanism and a durable tungsten steel tip with a hardness of 55. Delivering up to 20KGF of impact force, it can instantly break tempered side window glass, making it suitable for emergency rescue and escape situations. IMPORTANT NOTE: The glass breaker is designed specifically for tempered glass, such as automobile side windows. It will not break laminated glass, including front and rear windshields. WIDELY SUITABLE FOR MOST USERS: The compact design allows for fast window penetration during emergencies. With minimal effort, users can break the window in seconds. Its ease of use makes it accessible for adults, seniors, and older children, helping protect you and your family in emergency situations. ESSENTIAL EMERGENCY TOOL FOR VEHICLES: This safety hammer and seat belt cutter can help you and your passengers escape quickly during emergencies. The window breaker functions effectively even underwater, providing a reliable escape option in situations such as vehicle rollovers, electrical failures, fires, flooding, or submersion. Suitable for use in a variety of unexpected emergencies.