Bosch ground countersink made of HSS with three 90 degree cutters manufactured to DIN 335. Suitable for non-ferrous metals, alloyed and unalloyed steel, cast iron. Hexagonal shank suitable for screwdrivers. DIN 3126 C 6.3.

Diameters available : 8.3mm, 12.4mm & 16.5mm
Step height : M4 / M6 / M8
Total length : 31mm / 35mm / 40mm
Shank diameter : 1/4 "
Countersink bit type : Cone
Number of cutters : 3