This is the M2 tungsten carbide stylus for Zeiss #A-5555-0313. It has a stainless steel base, tungsten carbide stem, and ruby ball.
| Thread mount | M2 |
| Ball Diameter (DK) | 4.0 mm |
| Length (L) | 22.0 mm |
| Base Width (DG) | 3.0 mm |
| EWL (ML) | 16.0 mm |
| Stem Width (DS) | 2.5 mm |
| Stem material | Tungsten Carbide |
| Mass | 1.0 g |






