BRAND NEW UZI Tactical Defender Pen with Glass Breaker. Color: Black. Measures 6in. (15.2 cm). Made of lightweight aircraft aluminum. Features a solid, triangular shaped glass breaking crown that can be used to strike an assailant or to break glass to escape in an emergency situation. The crown is unbelievably strong and can be used effectively against an assailant with pin point accuracy to deliver blunt force trauma and cause great bodily pain.