UMR-83 Refills for Gel Ink Ballpoint Pen, 0.38mm, Blue Black Ink, 10-Pack, Sticky Notes Value Set

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.

While it bears the same stamp as the UMR-87 I have been working with, when I tried to put this replacement into my uni-ball Impact 207, I found that it would not fit. This replacement part is too large.

I liked that it was easy to insert it into the pen. I would have liked a thinner point but this is very usable. Although I have many pens, I use this one exclusively at home because it is so smooth.

Came as advertised. All refills have full ink. They make very clean and sharp lines. They do not bleed through very thin pages so I prefer these for note taking in my engineering classes over Pilot 0.38mm and Uni Jetstream 0.38mm.

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

Lightening fast shipping and great pen! AAA+++

This product is very good. Thank you!

Individually wrapped and wax capped on end. Perfect fit for 0.28mm Signo pen