Our spiral drill slot router bits, with shank diameter 8 mm are manufactured from high-performance cutting steel and withstand high demands. The spiral drill slot router bits are used in window construction. Drilling in aluminium and plastics is also possible.
Neck not ground free
They are therefore particularly characterised by a long tool life and smooth running.
D= diameter | NL = cutting edge length/useful length
GL= total length | S= shank diameter