Tobestronger Tactical Pen First Line Defensive Tool - Metal ...Delivered in 10 Business Days Azan Defense Tool First Line Tactical Pen. A personal protection weapon that is lethal by design and actually writes! Features an aggressively pointed DNA crusher crown. The machine knurled barrel provide a secure grip for writing or in a self-defense situation. Ink cartridges are replaceable. Twist to open and close, writes in black ink.