Fisher Space Pen Fine Point Pressurized Cartridge Refill, Blue Ink, 1 Pack

Great pen. All I have used for 6 years.

Perfect fit

The refills are exactly what I needed.

Writes perfectly every time! The pressurized cartridge works just as well as the original—smooth, consistent ink flow with no skipping, even on odd surfaces or at an angle. The fine point gives nice clean lines, and the black ink is bold without smudging. Super easy to install and lasts a long time. A must-have if you already use a Fisher Space Pen.

I like bold tipped pens. The cartridge that comes with the zebra f701 sucks! I needed something better. Tried the easyflow 9000 which I actually really like and use in other pens, but that was a no go. I just couldn't get it to work. Ruined the top end of the refill trying to make it work. Decided to just go ahead and buy the bold fisher pen refill and I'm glad I did. Not only does it write better than the stock zebra refill, but the click is much more satisfying..if that matters to you..but let's be honest here..it matters!! I wouldn't say it's the best writing refill out there, but it's definitely much better than what the zebra f701 comes with and it can write anywhere anytime! Great for my edc zebra f701! I highly recommend it! I should've just got this one to being with. Would've saved me time and irritation trying to get it to work! If you're getting it to replace the original one in the zebra f701 like I did..just make sure to remove the plastic insert that is in the tip of the pen where the tip of the pen comes out of. Cut off just a little piece of the plastic insert to widen it for the tip of the Fisher refill. Put it back in and you're good to go! Oh and you don't need the plastic white adapter that comes with the fisher refill. Just disregard that thing. Good luck and enjoy your fisher refill. I definitely am!

The pen refill works very well; exactly as advertised. In addition to fitting the space pen, it also fits into the Zebra F-701 Stainless Steel pen, with a quick (1 minute) alteration to the pen tip bushing.The advantage of using the space pen replacement cartridge into the 'off brand' body combines the "write any where, any position, any time" functionality of the space pen with the near-tactical, rugged, stainless steel, knurled grip Zebra pen. Combining the two results in a pen with the best qualities of both.Zebra F-701 cartridge replacement:The F-701 has a soft plastic bushing inside its pen tip. This bushing has a tapered inside diameter, which gets smaller as it approaches the tip of the pen. Before putting the space pen cartridge into the zebra pen, unscrew the zebra pen tip from its body, and push the space pen cartridge tip into the Zebra pen tip BACKWARDS. This will unseat the internal bushing so it can be easily removed. Cut the bushing with a sharp exacto blade or sharp scissors, removing about 1/4 of its length, from the tip (small) end . Then, slide the space pen tip through the (now shorter) bushing. It should slide through and back with no resistance. If it feels tight, trim a bit more off the bushing. Repeat until the new cartridge tip does slide to and fro, with little to no resistance. (Any resistance can cause the pen to not click open or closed successfully.) Re-assemble the zebra pen, using the F-701 pen body, spring and bushing with the new Space Pen cartridge ( but NOT the included spacer) to create a ruggedized version of the Space Pen.(Note: In addition, the existing Zebra F-701 pen uses the same cartridge as any Zebra F-401 pens that you may own and use.)

Perfect as usual. No lag or skips, very smooth

Best pen cartridge ever. Truly works in the harshest environments. My wife even washes mine several times per year and it doesn't stop working. Place this cartridge in a Parker Jotter pen housing and you have the best pen ever.