8 X Schmidt 635M Mini Ball Pen D1 size Refills – BLACK Ink and one removable black end cap

This 8-pack of Schmidt 635M mini ball pen refills --including the black tip -- is an excellent value and are the exact refills needed for my wife's Swarovski pen. The refills fit perfectly and easily into the black tip, and write as nicely as the original cartridge they are replacing. So, at $10.60 for the 8-pack vs. $5.00 for a single refill, my wife will have 8 times the ink supply for only about twice the price. You can't beat that!Highly recommended!!

I've been using the black cartridges of this ink on a daily basis for my Livescribe 3 smartpen. The cartridges fit right into the pen, and the app picks up the pen strokes as any official Livescribe-branded ink does.I bought this ink for the price point; I was paying approximately 3.8 times as much per ink cartridge with the previous product I used compared to this one (and I thought that one was cheap!) With this is mind I would definitely be interested in purchasing this product again, and potentially buying different colors and testing those out with the Livescribe 3 as well.Though I was looking for simply super cheap ink that would work in my smartpen, I'm pleasantly surprised by how well this ink flows onto the page. The previous ink that I bought would drip a small but excess amount of ink onto the page whenever I'd put the pen to the paper, making my writing look worse. This ink does considerably less, and all the more makes my writing look better.I'm looking forward to using this product in the future and will potentially post samples of my use of this ink if I get over how embarrassed I feel about my handwriting 😅.

Great to have refills for my pen that work like the one that came in the pen.

The cap that comes with the refills doesn't fit the Swarovski pen as well as the cap that is on the refill that comes with your pen, so keep that one, and use it with these refills. But, I think these refills are much smoother and richer than the one that came with the pen, so overall, very happy!

I ordered these refills hoping they would fit my cheapo pen/stylus I received as a bonus when buying a couple USB connectors. They were too long out of the box. I probed the refill with a toothpick, and found the ink is about ½" from the open end. This allowed me to cut off about ¼ '" with a Dremel tool, and it then fit and worked perfectly. The price is right too, at about at about $1.20 each, including shipping. Eight of them should last for years, or outlive the pen.I have read some of the reviews, and noticed a lot state they didn't receive the black plastic adaptor with the refills. For the record, I did, although I didn't need it. Lesson to be learned here is when your pen runs out of ink, don't throw the ink cartridge away until you receive the new refills. If you did, drop into a GOODWILL type store and go through their pens until you find one with an ink cartridge adaptor that will work with your pen. The pen most likely won't work, but the plastic adaptor will work in your good pen.

These pen refills are exactly the refill needed for my ball point pen. The count is enough to last for a year and the price was a bargain. They worked on first stroke!

I refill my favorite pocket pen with these. They write wonderfully and last quite a while for being a short size. 8 is probably more than I will ever use before something terrible befalls my beautiful pen.

Needed ink refills for my swarovski pen. These are the correct ones, myonly complaint is they were just the ink shafts-no threaded top on them....not one. The picture shows one-there wasnt any. You must have your original ink refill to use itfor these. Other than that-very happy. Good price good item. Shipment was much quicker than told-so nice surprise there. Would suggest to others with the warning above. Overall ok.