NexTool Tactical Pen Twist Cap Black. This sleek and durable NexTool Tactical Pen Twist Cap is handly to take with you on any mission ensuring you always have a writing implement you can depend on. These Tactical Pens from the experts at NexTool contain Tungsten Carbide tips that can write through anything from grease and ink to cloth. The barrel of each NexTool Fisher Space Pen Cartridge is made of Aircraft Grade Aluminum with a Type III hardness that can handle a good amount of abuse. Equip the NexTool Aluminum Pen with Twist Cap to protect yourself in dire situations. Specifications for NexTool Tactical Pen Twist Cap: Manufacturer: NexTool Color: Black Overall Length: 5.63 in Blade Material: Aluminum Handle Material: Aluminum Package Contents: NexTool Tactical Pen Twist Cap The Nextorch tactical pen is equipped with a special tungsten steel tip with a HRA90 hardness. These pens are equipped with a Fisher Space pen cartridge which can be used at any angle.