This is a car emergency safety hammer you can use the bus seat next good handle design when unexpected when you can crack the maximum intensity of the glass cut the car seat belt not only improve the driving safety factor but also the car Friends of the essential safety supplies! private vehicles also apply Product Features 1. Life-saving hammer / safety hammer: sharp strong hammer smashed the glass to escape in case of accident. 2.The cutting knife: hook embedded blade cut the seat belt to escape in case of an accident. 3. Behind the flat hammer can be used as a hammer to use.