Piedra con fase angular de 45° o bisel que permite el correcto afilado de sierras
| Grano | Medida |
| 19A60 | 6 x 1/4 x 1 |
| 19A60 | 6 x 3/8 x 1 |
| 19A60 | 6 x 1/2 x 1 |
| 19A60 | 8 x 1/4 x 1 |
| 19A46 | 8 x 1/2 x 1 |
| 19A60 | 8 x 1/2 x 1 |
| 19A60 | 8 x 3/8 x 1 |
| 19A46 | 10 x 1/2 x 1 |
| 19A60 | 10 x 1/2 x 1 |
