Uni-ball SXR-80-05 Jetstream Ballpoint Multi Pen Refills, Extra Fine Point 0.5mm, 4 Color Refills(Black/Blue/Red/Green) 12 Total Value Set

Love the quality of this pen. Very smooth, clean and extra fine! I enjoy writing with it. Amazing pen! Worth every penny

These worked really well. They are cheaper than buying the replacements individually.

Most I've used so far (4 of them) work well; but one started skipping and not writing properly after just a few uses.

Refills have nice smooth ink, with perfect colors

For all my fellow planners and note-takers out there, these Uni-ball Jetstream multi-pen refills are a game-changer. They write smoothly and the extra fine tip is perfect for detailed notes and sketches. I love having different colors to organize my thoughts and tasks. Whether I’m jotting down workout routines or brainstorming song lyrics, these refills keep my ideas flowing effortlessly. A must-have for anyone who loves staying organized and creative!

I'm an admitted pen freak and this is my current (and longest) go-to pen/refills. They have also become a consistent gift option, and I've converted many to my obsession. Only 1 pen to have/carry and options for those of us who thrill to 3 colors in one barrel. I've usually steered away from fine tips (this is 0.5mm) because of a tendency to skip which these have solved. There's also a gel formulation which means they hold up to thieves who could wash a purloined check and rewrite the information for themselves. It just doesn't get any better and I'm slowly shedding my prior favorites for others to use while reducing my clutter. Hooray and thanks!

I was worried if it's all opened, but it was all individually wrapped. Good deal with good price!

So, I know that there's probably not much that you can really review about pen refills, other than they are what they are and they work / fit. And that is exactly the case here. These refills were just what I needed for my pen and they work perfectly. With spares.