Fisher Space Trekker Keychain Ballpoint Pen in Matte Black Color__Chrome__fisher-cap-o-matic-chrome-plated-ballpoint-space-pen Compatible with Platinum fountain pens

Compatible with Platinum fountain pens

Replacement blades are also available

Cartridge: Fisher PR4 Pressurized Black Ink Medium Point

Noodler's Ink - Fountain Pen - Piston Fill Flex Nib - Poltergeist Pumpkin Orange :

Fisher Space Trekker Keychain Ballpoint Pen in Matte Black Color__Chrome__fisher-cap-o-matic-chrome-plated-ballpoint-space-pen Compatible with Platinum fountain pensThe Trekker Space Pen perfect for anytime capability use. This Fisher ballpoint pen can clip onto anywhere hang upside down for hours and still be ready for use at the drop of a hat. The pen is on a key chain ring attached to the posi lock cap that allows for easy access. Included with this Space pen is a carabiner and a break away lanyard. Fisher Space Pen Outdoor and Tactical SC725B Trekker Ballpoint Pen Matte Black Keychain Pen with Outdoor Image