The one-of-a-kind Black OTF Tactical Pen has a sleek yet durable design that offers the user a very easy to deploy, discreet blade. Sharpened on both edges, the 1 7/10” stainless steel blade is perfect for opening letters and for small slicing tasks. The razor-sharp blade is housed in a sleek and durable, black metal alloy, actual working pen. Included is a safety feature to prevent accidental deployment and the OTF pen has a pocket clip for ease of carry. An extra ink cartridge is included in the box.