- Fits E4, N4 and N4+.
- Grinds, does not mill — the right machining for a brittle material.
- Five sizes, including a torus.
Glass ceramic is machined by grinding, not cutting, and that calls for both diamond grit and wet machining. The tools are therefore only for the wet machines. A worn grinding tool leaves microcracks at the margin that do not show until the crown has been crystallised.
Specifications
| Diameter (mm) | 2.4, 1.2, 1.0, 0.6, 0.6 torus |
| Used for | Glass ceramic |
| Brand | vhf |