Dormer 5983999 | 4.00mm Drill Size x 6.00mm Shank x 11.00mm Maximum Depth of Cut x 55.00mm OAL x 30 Degree Helix Angle 2 Flute TiCN Coated HSS-E-PM C139 Slot Drill

Dormer's C139 milling cutters have a medium flute length for high rigidity when milling standard slots and an accurate diameter which means standard keyway slots can be milled to a P9 tolerance. They are manufactured from powder metal high speed cobalt which means longer tool life and better performance. Couple this with the titanium carbo nitride coating which further improves tool life and gives great performance when threading hard and abrasive materials and you have a very versatile tool, capable of ramping, plunging and profile milling in steels, stainless steels and cast iron.