Lightweight AND Portable: This car escape tool is only 3.6 inches, lightweight and small in size, does not take up space in your car, and can be hung on a keychain for easy carrying. Each safety hammer comes with a base that can also be attached to your car with adhesive backing. You can purchase four, two for the front and two for the back. Essential Escape Tools FOR Automobile: This underwater safety car window breaker and seatbelt cutter can allow you and your family to escape quickly in an emergency situation. The window breaker is not affected by water pressure and helps enable a quick escape underwater. It's widely used for rollover, electrical system failure, car fires, floods, car sinking accidents, and other unexpected situations. Vehicle Window Breaker: This 2-in-1 safe hammer glass breaker has a built-in high-pressure spring and a sturdy tungsten steel blade with a hardness of 55. With a 20KGF impact force, it can break solid window glass instantly. Note: Metal Tip Stays Inside The Tool - Only Springs Out When Breaking Glass. Widely Applicable People: The compact car window breaker and seatbelt cutter can quickly shatter the side window glass when encountering an accident. With just the force of one finger, you can break the window in one second, enabling a fast escape. Suitable for adults and seniors, men and women, it helps protect you and your family's safety in emergencies. Seat Belt Cutter: The car safety hammer has a built-in sharp stainless steel blade with a hidden U-shaped blade design to enhance user safety and help prevent hand injuries. When in use, simply position the U-shaped blade against the seat belt and push forward quickly to easily cut through a jammed seat belt.