This black anodized aluminum tactical pen measures 5.4 inches and provides discrete, convenient security without drawing attention. The glass breaker could be used to make an emergency exit through a vehicle or building window. Perfect for everyday carry (EDC) in your pocket, purse, or laptop bag. Always be prepared with this pen which is ready to be instantly deployed in any threatening situation. GLASS BREAKER provides an emergency escape from a vehicle, building, or other threatening situation. Keep one in your car and another one next to your sliding glass door. BE PREPARED anytime with this self defense pen that is lightweight and easily accessible TRAVEL FRIENDLY design for everyday carry (EDC), even on airplanes EASILY CONCEALED so that no one knows that you are carrying a self defense tool that can be deployed instantly in a moment of crisis ANODIZED ALUMINUM black pen barrel is sturdy and lightweight, has a handy pocket clip, and comes complete with two blue and one red ink refills.