Retro 51 Easy Flow 9000 Ballpoint Refills, Black Ink, 3-Pack – German Engineered for Smooth Writing, Compatible with Tornado Pens

I love my retro pens. I always carry a reto pen and a moleskine in my pocket. Old school. I know I could use my iPhone's notes... but I like to write things down. Also provides the optics that I am paying attention... and indeed, I am. No distractions from the incoming messages. The refills fit and write beautifully.

Have used these for years and the quality is still amazing. They last a long time and write very smooth. Never any gunk build-up at all either. Highly recommended.

Flows smoothly with enough tooth to grab onto paper but not as much as a ballpoint. Good coverage and blackness/density.

I bought these to refill the ink in the Apple pens that I bought from the Apple company store. The Apple pen uses the same Retro 1951 ballpoint ink refill. I bought 3 Apple pens and of course, I bought the colors to match the iPhones, the laptop and the iPad :<). Aside from being a pen with an Apple logo on it, these pens are really good writing instruments. The Apple pens are neither too heavy or too light and with just the right weight. I am a loss control consultant and I write 80 plus page reports and the Apple pen with this ink is the best combo. I replaced the Waterman Exception rollerball pen with the Apple pen because it really writes well. I will be back in San Francisco next year, and I will pick up at few more Apple pens just because they are such fine writing instruments. At $35 a piece, it is still worth it considering my Waterman Exception which I have two are over $200 a piece.

The refill works fine on some paper but skips on photo like paper.

I have a unique pen and thought I'd have trouble finding replacing ink. Easy flow 9000 is perfect!

I m disappointed, it was advertised as a fine point ink refill but it is not:^(

I’ve been using the same Tornado pen for like 15 years. I have two, one in orange and one in red. I love using Amazon to purchase my pen refills. These are great. Easy to load, writes smoothly. I imagine I’ll get many more years out of my wonderful pens as long as I can continue to buy these wonderful refills.