Zebra Ballpoint F (F, M, B) Refill

• Length: 88.9mm (3.5″)
• Manufacturer’s website: Zebra

The Zebra F Ballpoint refill is a proprietary size and shape that fits some Zebra ballpoint pens. It has a similar profile to the Fisher Space Pen compatible refills, so it will fit in some other pens of that profile. This refill is available in black or blue ink in a fine or medium line width and black ink in a broad line width. The F refill also comes in an older metal body version.  No third party refill makers offer a substitute for this refill.