Series 90 – Regular Series | Dimensions to DIN 844. Centre cutting. Shank to DIN 1835B. Cutting diameter to js12. Shank diameter to h6. | | The combination of HSS-E PM and TiALN provides a cutter that is ideally suited to dry and semi-dry machining of materials up to 45 HRC, stainless steels and Aerospace alloys.