Head Diameter Inch 1 Number of Flutes 3 Included Angle 90 Countersink Material Cobalt Countersink FinishCoating TiN Coated Shank Diameter Inch 38 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