This is the M3 reference styli XXT (red dot) #A-5555-3858. It has a titanium base, thermo stable carbon fiber stem, and ruby ball.
| Styli | M3 |
| Ball Diameter (DK) | 5.0 mm |
| Length (L) | 50.0 mm |
| Base Diameter (DG) | 5.0 mm |
| EWL (ML) | 41.0 mm |
| Stem Diameter (DS) | 3.5 mm |
| Stem material | Thermo Stable Carbon Fiber |
| Mass | 1.4 g |
