Self Defense Pen Aviation Aluminum for Writing and Glass Breaker black

Description

The surface oxidation treatment is not easy to fade. The pen head part is inlaid with ultra hard tungsten steel head (commonly known as tungsten carbide products, with hardness up to 14). Diamond thread design is adopted at the holding position to increase friction force, hold more firmly and not easy to get out of hand, effectively use action and improve safety factor. The utility model can rotate and retract the hidden pen core, and the operation is simple, convenient and practical.