The Cutter with teeth on the conical surface and with unequal angles between the conical sides and the plane of intersection of the two cones. The nominal angles of the cutter are the angles between the two conical sides, measured in a radial plane. As per I.S. 6324 – 1971
Product Specification
| Diameter | Width | Bore | Small Angle in Degrees x Included Angle in Degrees |
| 50 | 12 | 16 | 12×55, 15×60, 16×65, 15×70, 15×75, 15×80 |
| 50 | 14 | 16 | 20×90 |
| 50 | 16 | 16 | 25×100 |
| 63 | 18 | 22 | 12×55, 15×60, 15×65, 15×70,15×75, 15×80 |
| 63 | 20 | 22 | 20×90 |
| 63 | 22 | 22 | 25×100 |
| 80 | 32 | 22 | 15×65, 15×70, 15×75 |
| 100 | 36 | 27 | 15×70, 15×75, 15×80 |