With ground straight flute. Diameters lasered into the flute.

CBN ground Multi Step Drill with two cutting edges and fixed pilot drill. Drills accurate holes in all popular materials such as mild steel, non-ferrous metal and plastics up to 4 mm thickness. With three flat shank to prevent twisting.

Step length: 4 mm

Steps: PG 7 – PG 9 – PG 11 – PG 13 – PG 16 – M 25 – PG 21 – 30,5 mm