SELF-DEFENSE TACTICAL SURVIVAL PEN IS MADE OF MILITARY GRADE HIGH-STRENGTH AEROSPACE ALUMINUM WITH THE CONE DESIGN ON THE TOP,EFFECTIVE IN FIGHTING CRIMINALS. THE HOLES ON THE CONE CAN COLLECT DNA OF CRIMINALS. EMERGENCY TOOL FOR GLASS BREAKING,EASILY PUNCHES THROUGH THE WINDOW,CAN BE USED AS SAFETY HAMMER IN EMERGENCY SITUATION. WRITING VERY SMOOTH WITH FASHIONABLE DESIGN,IS GREAT FOR GIFT. AVAILABLE IN CHAMPAGNE ,SLIVER AND BLACK. YOUR OWN DESIGN PACKAGE IS WELCOMED!. 6" H X 0.4" DIAMETER