This is the M4 ruby stylus #A-5003-5743.
This straight stylus can be used for simple features with which direct contact can be made. The stainless steel stem offers superior rigidity and is ideal for applications where weight is not a concern. Zirconia tips are more suitable for abrasive surfaces such as cast iron parts.
| Thread mount (DG) | M4 |
| Ball Diameter (DK) | 4.0 mm |
| Length (L) | 18.0 mm |
| Stem Diameter (DS) | 3.0 mm |
| EWL (ML) | 13.7 mm |
| Ball material | Zirconia |
| Stem material | Stainless Steel |
| Mass | 2.1 g |
