This M2 ruby ball styli has a Zirconia ball material. It also features a tungsten carbide stem. It is stylus number #A-5004-2939.
Zirconia is a particularly tough ceramic material with hardness and wear characteristics approaching those of ruby. Its surface properties make it an ideal material for aggressive scanning applications on cast iron components.
| Thread mount (DG) | M2 |
| Ball Diameter (DK) | 4.0 mm |
| Length (L) | 40.0 mm |
| Stem Diameter (DS) | 2.0 mm |
| EWL (ML) | 40.0 mm |
| Ball material | Zirconia |
| Stem material | Tungsten Carbide |
| Mass | 2.04g |
