Outus 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)

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

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.

Very inexpensive compared to other refills. Red is bright, ink flows smooth. My High School teachers would have had a field day marking my papers...

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

fits my favorite pen