This is the M5 styli for Zeiss #A-5555-3781. This is a tungsten carbide styli with a titanium base, tungsten carbide stem, and silicon nitride ball material.
| Styli | M5 |
| Stylus Base Width (DG) | 11.0 mm |
| Ball Diameter (DK) | 2.0 mm |
| Overall length (L) | 20.0 mm |
| Stem diameter (DS) | 1.0 mm |
| EWL (ML) | 10.0 mm |
| Stem material | Tungsten Carbide |
| Mass | 3.5 g |
