Hardcore Hardware HHA Tactical Pen. 75" overall. Pocket clip. Screw cap. Black anodized aluminum body. Pressurized ink cartridge. O-rings make it waterproof when cap is screwed down. Accepts standard Parker and Fisher Space Pen refills. Boxed. Specifications for Hardcore Hardware HHA Tactical Pen: Manufacturer: Hardcore Hardware Color: Black Additional Features: Pocket Clip Length: 5.75 in Overall Length: 5.75 in Package Contents: Hardcore Hardware HHA Tactical Pen