If the pen is mightier than the sword, the Double Duty Tactical Pen is the toughest pen on the planet. Both a premium quality writing implement and a last ditch defensive tool, the Double Duty Tactical Pen 1.5 is equally at home writing a note or punctuating a perp. Includes Fisher Space Pen PR4 Medium Point Black ink cartridge. Features include a subdued matte black finish, knurled grip areas for confident control, and machined aerospace aluminum construction for durable and precise defense when you need it most.