Uni-ball Jetstream Fine Point Roller Ball Pens Refills for Standard Pen Type -0.5mm-black Ink-value Set of 10

I was worried that this item was flagged as frequently returned but did the research and went ahead and purchased. It does works with Jetstream RT body, and it writes smoothly.

Works just fine. Helps save money on buying the entire pen.. and I like that I can reuse the current pens once ink runs out

I know this brand is fitting the pen I bought just thought I’d show you guys the packaging and how I received it!! I will update once I use them if there is anything wrong with the refills themselves

Inks are great but the pen runs out before the ink does. This also does NOT fit the pen it pretends to advertise (uni jet stream 4ink+1pencil tip). I don’t know why they’ve been advertising it over a year as fitting. It used to fit. My three purchases this year confirm it still does not fit the pen you are seeking to replace inks for. Don’t buy this.

Gel ink isn’t allowed in my workplace due to potential smearing. My favorite pen(Tactile Turn side click) takes a Pilot G2 sized refill. These fit well in the pen and I prefer the way they write over the Pilot.

If you have the Uni Jetstream Standard Ballpoint Pen - 0.5 mm then these are the correct refills. For $9, i think these are extremely fairly priced for a 10 pack as it’s around $2 per refill on other sites.

These pens are my favorite, plus the fact that they're Japanese pens. Ink glides smoothly and I love how it also comes in 0.38. I use this for everything. Buying these refills are far cheaper than throwing away your old and buying a new one.

Solid product. I recently bought this again, and last had to buy it April 2016. I write prescriptions all day, five to six days per week, and that is how long they lasted. I am also left-handed. The ink doesn't ever smudge, which is nice. It is, for the most part, quite smooth and clear, with nary a skip. I did notice that maybe 3 out of the 10 in the pack would start skipping when the cartridge was 3/4 finished. Still, for around $10 these are spectacular. I've had much more expensive ink skip or smudge on me.

Simply very Good Product .