Inch - 1/2" Shank Diameter.
Produces closed slots for woodruff keys to DIN 6888. For milling structural, carburizing and heat treated steel up to 900N/mm2. Manufactured to BS 122 : Part 4 : 1980. Made to DIN 850. Shank to DIN 1835/D.
Inch Limits of Tolerance:
Diameter: +0.015" -0.100".
Width: +0.000" -0.001".