Product net weight: 50g Product name: car safety evacuation Hammer test glass: one piece Dimensions: 20x88mm Package size: 120x80x35mm Process: sandblasting oxidation Material: aluminum alloy / PC + ABS, etc Including package weight : 110g Specifications: Easy to carry: fits in pockets, wallets, key chains, protective covers with double-sided tape and can be easily attached to the car for emergency situations. Window breaker: A robust tungsten steel blade with a hardness of 55, which delivers a strong impact and can break the window glass in a second Seat belt cutter: Open cover, align the cutter's U -shaped mouth with the seat belt, quickly push it forward and get off easily and quickly. High quality material: Metal frosted, aluminum alloy material, placed in the car, can withstand high and low temperature. Note: Only the tempered glass of the car's side windows can be broken, and the laminated glass such as the front and rear windshields and sunroof cannot be broken. To be on the safe side, everyone should have one in every car. package includes: Safety hammer * 1, base * 1, test glass * 1