Primo ball
 |
The cutting edge is formed up to 90°position from the circular arc top, and the effective length is set. |
| Application | Work materials |
| Machning for plastics or nonferrous metals. | Plastics, Nonferrous metals, etc. |
| Standard specification | (mm) | ||||
| Radius | Window angle | Cutting edge length | Effective length | Shank | |
| 0.5 | 90° | Eaqual to radius | 3.0 | φ6 × 50 | Drawing |
| 1.0 | 6.0 | Drawing |