Save the environment and money with this black color refill for the Pilot Dr. Grip G-Spec, Dr. Grip Full-Black, Dr. Grip Skytime, Pilot S20 Ballpoint pen and more. Black, blue, and red ink refills are available.
These are great refills. While not specifically referenced in the JetPens
catalog, the ink seems to be a low-viscosity ink that flows much better than
traditional ballpoint ink. It is comparable to Uni "Jetstream" ink. I find the
Pilot ink actually flows onto the paper more smoothly and will less skipping
than Uni's "Jetstream" pens.