G12518.0X8.5 Counterbore - 180°

Counterbore with 3-flutes, diameter 18.00mm with an overall length of 100mm and a flute length of 22mm and 12.5mm straight shank, according to DIN 373 standard to produce a counterbore with the aid of a non-drilling pilot with a diameter of 8.50mm for a pre-hole tapping diameter M10, HSS with standard bright finish for machining free machining and plain carbon steel, wrought and copper or copper alloys