- 90° Three Flute for countersinking/counterboring screw holes
- Made to DIN335 specifications
- Made from M2 High Speed Steel (HSS) offering the best combination of strength, heat & wear resistance
- Bright finish for general purpose applications, non-ferrous metals & plastics
90° Three Flute Countersink for countersinking / counterboring screw holes. Made from High Speed Steel for use in steel, and tool steel. Stainless steel, cast iron, brass & aluminum. Can be used in portable & pedestal drilling machines.