PentagonLight's Porcupine is a handheld tactical-style light that runs on two CR-123A and puts out 70 lumens. It's made from military-grade aluminum with the light and battery compartments O-ring sealed so you can safely operate it in the wettest of conditions. What sets this light apart and gives it its name is a retractable lamp bezel that has several sharp serrations which are quickly and easily exposed, and just as quickly retracted, allowing you to use the Porcupine as an impact weapon. While it may sound mean, this light will mark the person you use it on, helping ID the perpetrator. PentagonLight's Porcupine has a clip that secures the light where you put it. It's also roll-proof, thanks to its pentagon-shaped tail cap.