Of all the things guys carry on the daily, a pen tends to rank just behind wallet and car keys. Boker took that fact and crammed multiple potentially life-saving tools into a pen that’s compatible with Fisher Space Pen cartridges that can write upside, underwater, even in zero G (should you ever find yourself floating in space). The cap contains a glass breaker spike – a tool that’s more useful on your person than across the car in a glove box. Built into a durable, grippable lightweight aluminum housing shaped like a Kubotan, the pocket-sized tool of self-defense fame. Cartridge case has a left-hand thread to keep it from unscrewing during normal, or even abnormal, use. Pocket one today and stay prepared for mundane signature signing and that-went-south-fast scenarios alike.