【Origin-Joy AL01 Series】The AL01 Series is an entry-level tactical pen designed for everyone. The Green Camouflage model is the Ultra version, featuring premium two-tone hard anodization that delivers a distinctive military green camo finish — a proprietary technique exclusive to Origin-Joy. 【Tungsten Steel and Aviation Aluminum】The material of tactical pen body is made of sturdy tungsten steel and 6061-T6 aviation aluminum alloy. The hardness up to 14 HRC, it can be a survival tool and emergency glass breaker. Suitable for keeping as a spare in the car, garage, and other places. 【Easy to Carry】It has a durable manganese steel pen clip, you can attach it to shirts, trouser pockets, backpacks, bags and notebooks. It won't be confiscated as a prohibited goods and weapon by security personnel, go through the airport security check easily. 【Dual Function】Self-defense pen. It can be used for daily writing, and in emergency can be used for defense, protect yourself, the glass breaker tip has the greatest potential to save a life. 【Package Contents】You'll get 4 tactical pens and 16 universal 1.0mm black ballpoint pen refills. Origin-Joy 4 Pack Tungsten Steel Military Tactical Pen Set, Multifunctional EDC Self Defense Pen With 16 Ballpoint Refills (Gray)