Really Specific-Use Pen

Let’s say the only way in is through the window, and the glass is really thick, and once you’re inside you’re going to have to leave a note. Wouldn’t you know it, someone came up with a gadget for that very scenario. It’s a tactical pen, 5” long x 1/2" at it's widest in black metal with a pocket clip on the cap. Always at the ready is a glass breaker tip. But unscrew the o-ring sealed cap to reveal a hidden pen with a replaceable high-volume cartridge. This is a solid piece, nice enough for the aforementioned hyper-specific mission, but also solid enough to use in self-defense (no joke). We like it as a nice pen to keep around the house, and if we ever need to get out through a window—hey, bonus.