| Refill | Line Width | Best For | Included? |
|---|---|---|---|
| Grafton Metal Gel 0.7mm | Included with Brass Mini Twist | Smooth daily writing, dark bold lines | ✓ Yes (black) |
| Grafton Metal Gel 0.5mm | Compatible | Fine-point precision writing | Sold separately |
| Grafton Oil Base Ink 1.0mm | Compatible | Bold, long-lasting oil-based line | Sold separately |
| Fisher Space Pen | Compatible | All-weather writing, archival ink | Sold separately |
| Parker Gel/Ballpoint | Compatible | Smooth gel feel, quick-dry | Sold separately |
| Monteverde Ballpoint | Compatible | Budget-friendly option | Sold separately |
| Bic Gel | Compatible | Everyday writing | Sold separately |
| Uniball/Jetstream | Compatible | Smooth, fast-drying | Sold separately |
| Pilot G2 | Not compatible | - | - |
| Attribute | Brass Mini Twist | Aluminum Mini Twist |
|---|---|---|
| Weight | 1.8 oz | 0.9 oz |
| Diameter | 11mm | 11mm |
| Finish | Coated brass (wears to natural brass) | Anodized aluminum |
| Durability | Hides scratches better | Anodizing is scratch-resistant |
| Best for | Weighted feel | Lightweight EDC |
| Antimicrobial | Brass has natural antimicrobial properties | Aluminum is not antimicrobial |
| Price | Typically $5–10 more than aluminum version | Lower price point |
Indestructible
Precision
Smart
Travel-Ready
Refill compatibility verified through internal testing. Grafton Metal Gel available in 0.5mm and 0.7mm; Oil Base Ink available in 1.0mm.
Parker-style refills with max length 4.5 inches and max diameter 0.23 inches fit the Mini Twist mechanism.
Indestructible
Precision
Smart
Travel-Ready
