This refill is a popular 0.7 mm ballpoint-style pen refill. It’s a modern ballpoint refill that writes smoothly, but it’s still considered a ballpoint.
This refill is used in cheap pens, thin pens, and multi-pens sold by Uni, Uni-ball, and Mitsubishi Pencil Co. Ltd., most prominently the Uni Boxy 100.
Uni S-7S Ballpoint Multi-pen Refill Information
| Street Price | Check Price |
| Manufacturer | Uni |
| Pen Type | Ballpoint |
| Rating | |
| Sizes | 0.7 mm |
| Ink Colors | Blue, Black, Red |
| Max Body Width | 3.0 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 | |
| Refill Length (cm) | 8.8 cm |
| Tip Shape | Conical |
| Tip Material | Metal |
| Refill Standard | D1 |
| Quantity Sold | 1 |
| Similar Refills: |