The BRFN-10F is a plastic body Pilot refill that is found in the Dr. Grip pens as well as the Pilot Ageless and S20 executive pen. It’s a proprietary shape that only Pilot uses, which makes this refill difficult to swap out in place of another refill. The BRFN-10 is not sold in an extra fine model, for that you need to upgrade to the BRFN-30EF.
Pilot makes a higher end refill in the same shape: the BRFN-30F.
The BRFN-10F is technically the Acro ink BRFN-10 refill in the F (fine) size. For this line of refills fine is 0.7 mm. The refill is also sold as the BRFN-10M, which is a 1.0 mm refill.
Acro ink is sold as a ballpoint refill because it’s oil-based, but it’s more commonly accepted as a hybrid ink because it’s a modern, lubricated oil-based ink.
Pilot BRFN-10F Ballpoint Pen Refill Information
| Street Price | Check Price |
| Manufacturer | Pilot |
| Pen Type | Ballpoint |
| Rating | |
| Sizes | 0.7 mm |
| Ink Colors | Blue, Black, Red |
| Max Body Width | 6.0 mm |
| Acid-Free? | No |
| Erasable? | No |
| Pressurized? | No |
| Archival? | No |
| Fade Resistant? | No |
| Fraud Prevention? | No |
| Quick Drying? | No |
| Non-toxic? | No |
| Water-resistant? Waterproof? | No |
| Ink Base | Oil-based |
| Refill Length (cm) | 8.6 cm |
| Tip Shape | Conical |
| Tip Material | Metal |
| Refill Standard | Proprietary |
| Quantity Sold | 1 |
| Similar Refills: |