The Smith & Wesson Military & Police Tactical Pen is made of CNC machined T6061 Aircraft Aluminum. The pop off pen cap has a lanyard hole and pocket clip. Each Pen includes one Schmidt P900M Parker style black ball point ink cartridge. Each pen is 6.1 inches in length. CNC Machined Black T6061 Aircraft Aluminum, Pop Off Pen Cap with Lanyard Hole and Pocket Clip Includes One Schmidt P900M Parker Style Black Ball Point Ink Cartridge Overall Length 6.1 inch Matte black finish Pop off cap with pocket clip