Zebra Pen F-Series Stainless Steel Ballpoint Refill, 2-Pack Assorted Ink Colors, 1.0mm Medium Point, Smooth Writing for Everyday Use (85422)

Much easier to write with the 1.0 mm. Big improvement over the 0.7 mm

Bolder than the fine-point scritchy-scrapey standard tip. Smooth and nice.

Fits like it should

It’s a pen refill for a zebra pen. It works as well as the one that came with it.

I'd rather buy a refill for my pen than a whole new pen, especially when the pen isn't worn out - just the ink.

One of all time favorites for EDC

It works!

I’ve been using these in my fisher space pen for a while now.