Shootmy Military & Police Grade Survival Tactical Pen Writing Ball Pen for Self Defense, Window Glass Breaker for Men and Women Integrated glass-breaker tip features high hardness aluminum alloy of big antipersonnel force Can get pass security checks or other checks so itll protect you anytime, anywhere. Reliable push-button mechanism for convenient use Used as regular writing tool or a powerful self-defense tool Works well for self-defense and for breaking glass if in need of an emergency escape