12 Pieces Pen Refills Black Ink 1.0mm Medium Point Metal Ballpoint Refill Smooth Writing Pen Refills Replacement Refills for Retractable Ballpoint Pen School Office Supplies (Black)

Great item and price, well packed. Arrived as scheduled.

I have an old tac pen that finally needed some new ink cartridges. It normally takes Parker cartridges but with the price going from 2 dollars to 10 I felt that it was time to find a substitution. These cartridges get it done, they fit perfectly and the ink writes well. The only issue that I had was the rubber that they place over the nib can be very hard to get off. Other than that they are great. Why pay 10 dollars for 1 when you can get 12 for 5. It's essentially the same thing.

I’m very pleased with these ink replacements. My company gave me a pen I actually like and I was disappointed when the ink ran out. Thought I would give this a try, wasn’t sure if it would fit or not. They are easy to use and write great. They actually fit in several pens I had around the house. I recommend them!

WORK FINE, SEEM TO BE IDENTICAL TO ORIGINAL. GREAT PRICE

fits my favorite pen

I'm a bit of a pen phenatic and I must say, these have really good ink flow, nice blue color, and they write surprisingly smooth. Just what I needed.

Just received my refills. 12 Parker jotter refills for $6 is one heck of a price. I just tried one in my pen and the fit is fine and the ink appears to flow smoothly. I am very satisfied with the purchase. The only question will be durability - how long will the ink flow, will it continue flow evenly and will the cartridge leak. For now, I'm very happy with the first of twelve. I will update when, and if, things change.

These write fine with smooth ink as long as you hold your pen straight up & down. But for elegant elongated writing, these are a bust. The ball barely reaches past the end of the cartridge hole so you're basically scraping paper as you write. Photo: I put 2 inserts from the pack into 2 of my nice pretty pens ☺️ The rest are visible still in the pack, and next to them are a few I removed from the old pens to show what type came out - just a visual that the replacements fit just fine. So, may be good for writing in all caps as some do, but for proper cursive? Nah. Lol

Really good quality for a low price - I was really pleased with these.

Fast delivery, fits properly inside the pen, it does its job, Thank you

Fits Parker pen Writes well

Writing and drawing are fine

I have used these to keep using a Cath Kidston Pen I was bought, fits perfectly and the pen twist mechanism works with these as well. These do NOT fit with the Swarovski pens, they require a smaller one in length even though the ball point is the same.