Regular Series Type E411T.
Used for profile milling and producing open slots. Bright finish. Flute type : 30° helix.
Manufactured to BS 122 : Part 4 : 1980.
Metric Tolerances:
Diameter: up to 38.00mm. Tolerance: +0.0630, -0.0130.
Diameter: Over 38.00mm. Tolerance: +0.1250, -0.0000.