The EMI Lifesaver Hammer features a combination seat belt cutter and window shattering tool. One side of the hammer head strikes window glass to shatter it in the event of a life threatening emergency. The other forged head is useful to remove the glass. Both heads are dropped forged steel with a contoured handle and a built in light to illuminate the rescue area. Combination mounting kit: screws for permanent mount and needle prongs for temp. carpet mount or adhesive mount. Made of strong high-impact plastic. The Lifesaver Hammer is approximately 9 long and weighs just 10 oz. (2 AAA batteries included for built in light)