The size of car escape safety glass hammer is 0.63″ x 0.63″ x 3.54″, which is small and lightweight, convenient to carry in your car/key/pocket, easy to escape from emergency. The window breaker can easily break window even underwater from a submerged car and escape quickly in the water, no fear of disturbed by water pressure. It resets after each use and is reusable multiple times. The razor-sharp, stainless-steel blade allows to cut a jammed seat belt in no time. The seat belt cutter composed of ultra-thin blades, which is safe and reliable. Slice the seat belt diagonally for a quick and clean cut, allowing you to quickly get out of emergency situations. This product supports customized logo, logo process for laser engravered. The prices for 2500pcs or over are based on ocean shipments.