This seatbelt cutter/window breaker is a great item to keep with you in your car or on your keychain. It features a tempered glass window breaker with a solid, heavy-duty stainless-steel spike that easily breaks car windows (aim for the bottom corners). It also has a sharp blade to cut a seatbelt in case of an emergency- just slice the belt diagonally for a quick and clean cut. Plus, it can be used multiple times so you don't have to worry about replacing it.