Countersink Type Three Flute Minimum Head Diameter mm 104 Maximum Head Diameter mm 31 Minimum Included Angle 90 Maximum Included Angle 90 Countersink Material Cobalt M35 Cobalt TiN coated Wide flutes provide good chip evacuation Positive cut Constant profile aids regrinding of the tool Selfcentering of the cutting mill three bearing points Virtually eliminates vibration