The Ohto C-305P Ceramic Rollerball pen refill is a super smooth 0.5 mm rollerball refill in a standard European rollerball size.
While it’s not cheap, this is one of the smoothest rollerball pen refills sold today. It has a metal body and is sold in a 0.5 mm size, but writes much wider thanks to the water-based rollerball ink.
The “ceramic” in the name refers to the material from which the ball itself is made. The super-hard ceramic in the writing ball is very wear resistant, perfectly round, and carries ink well from the reservoir to the paper.
The C-305P is most commonly found as the stock refill in the Ohto Dude metal rollerball.
Ohto C-305P Ceramic Rollerball Pen Refill Information
| Street Price | Check Price |
| Manufacturer | Ohto |
| Pen Type | Rollerball / Gel |
| Rating | |
| Sizes | 0.5 mm |
| Ink Colors | Blue, Black, Red, Blue Black |
| 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 | Water-based |
| Refill Length (cm) | 11.1 |
| Tip Shape | Conical |
| Tip Material | Ceramic, Metal |
| Refill Standard | Pilot G2 |
| Quantity Sold | 1 |
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