Stationery JP Uni-ball UMR-80 Refills for Signo RT/RT1/207 Gel Ink Ballpoint Pen, 10-Pack, Sticky Notes Value Set Micro Point (0.38mm) Black

My Muji pen ran out of ink so I looked online to find 0.38mm refills at a decent price per count and came across this. If you're looking to only get the 0.38 refills for the specific Muji pen from my picture, these refills are what you need. When I searched for the 0.38mm refills on Amazon, I only found they sold the Muji pens (at about a dollar more per piece than the refills, but I don't need more pens), and a 3-pack Muji refill that is $5.92 per count (not worth). It fits perfectly into the Muji pen just as it said from a review I saw online. Definitely will purchase this again when I run out of refills!

These refills are perfect for either writing or drawing. Gives a solid line or text without any of the fade some gel refills give. Fits in all Pentel pens and the Pilot G2 and G4 pens.

I bought a gel ballpoint pen for some work I was doing. The point was Very Fine, which was perfect for what I was doing. When the ink ran out, a trip to the store was disappointing because there were no refills or new pens. I love my pen, so I was happy to see replacements available. Each one is individually packed and the ball end is sealed so the ink won't dry out. Great product, and the sticky notes were welcome as well.

I've tried other refills for my favorite pens and they were very inconsistant and would stop flowing before reaching the bottom. I took a chance on these and I've been impressed with how consistant the flow is...which is the most important part. I'm 75% through the refill and it still is functioning perfect.

Ink is great. No skipping. Items fit into my pen (0.7) perfectly.