This is the M5 stylus for Zeiss #A-5555-0051. This is a ceramic styli. It has a titanium base and a ruby ball.
| Styli | M5 |
| Ball Diameter (DK) | 8.0 mm |
| Overall length (L) | 114.5 mm |
| Stylus Base Width (DG) | 11 mm |
| EWL (ML) | 101.5 mm |
| Stem diameter (DS) | 6.0 mm |
| Mass | 38.0 g |
