uni JETSTREAM SXR-80-05 0.5mm Red Ballpoint Pen Refills (5 Pack) - Premium Smooth Writing for Office, School & Everyday Use - Compatible with Standard Pens

So as a refillable pen newbie I apparently joined the masses who screwed up and ordered the wrong refills because I didn't realize there was a difference other than in manufacturer's packaging and color.Live and learn.Tried to do the Return process, but it would cost $6.01 to return via dropping to UPS (even though I pretty sure mailing them in a small mailing envelope through US Postal would have been okay seeing as the package is both small enough to fit in a standard envelope AND really lightweight--making it more like a dollar or so.) Once I factored in the cost of printer ink to print the label, paper, driving down to the nearest UPS (the cheapest return route) I figured the leftover return of two dollars at best wasn't worth it.So now I'm feeling pretty crummy and rethinking the idea of using refillable rather than one-use pens. Especially after comparing the refills to the amount of ink in these--looks to be about 25% less than a cheap throw-away pen.On the upside it wasn't a total loss as I can now experiment on how best to make an inexpensive 'grip' that will allow me to write using these refills. I'm thinking either sponge tape or maybe I'll find a small tube in the junk drawers out back. Or punching one through a breadstick. Gives a whole new insight to gnawing on one's writing instrument.Or heck, I can just con myself into thinking these are just super-slim pens that will be all the rage once people spot me using them to pen my memoirs. Look that cool person weilding that super-cool space saving pen! :)Fantastic ink - use it with my jet stream alpha. Does smear initially on prescription labels but dries super quick (couple seconds). To date this is the best solution I've found. I went from the 0.7 mm to the 0.5 mm and it's much sharper and seems to last twice as long. Almost perfect.I bouht this item through the "frequently boughr together" link of blue refill sxr 80-05. Therefore I thought this red refill item is also sxr 80-05. But it was not and found to be sxr 150-05 instead. I want to return this but I tore one package out of five. Can I still return this?on right in pic (sxr-80-05) is what I ordered. items on left and middle is what I received. it's larger and a different description (sxn-150-05) which I didn't catch until much later when I tried to use them.It is not the SXR-80-05 as advertised (and labelled on the multipack)!! It is actually the SXR-5. NOT HAPPY!!DOES NOT FIT!!As you can see by other reviews, the seller is not consistent in the item associated with this listing. I ordered these last year for my Uni Jetstream with no issues. This year when I ordered, I received a completely different refill that is not compatible with my pen. A new product should require a new listing. It's pretty bizarre that doesn't seem to be the case.Love the way these pens write.This product is mis-labeled. This ink is not for the Uni-Ball Jetstream Fine Point 5 in 1. The ink tube is too wide to fit in the pen.Didn't fit the Uniball Jetstream 0.5 4 & 1 so disappointing.Great