A tactical pen with a black ballpoint pen refill; Crown head design; Not only provides a writing tool for you but also an emergency tool to break glass and escape in time; Ergonomic design with clip for easy hanging onto your clothes or bag; Effectively prevent criminals for a chance to escape; The pen tip can hit criminal effectively and cause temporary hurt; Anti-shock design protects your fingers from shock; Can break the glass if the bus or house get fire and rescue yourself or others; Can be used as a pen black refill; With clip convenient to carry; Great for office workers and outdoor lovers