This is the M3 carbide stylus XXT #A-5004-3188. It has a titanium base, tungsten carbide stem, and a ruby ball.
| Styli | M3 |
| Ball Diameter (DK) | 2.0 mm |
| Length (L) | 14.0 mm |
| Base Diameter (DG) | 5.0 mm |
| EWL (ML) | 5.0 mm |
| Stem Diameter (DS) | 1.0 mm |
| Stem material | Tungsten Carbide |
| Mass | 0.66 g |
