- -23%
HSS Step Drill Ø4-20 mm. Step 2 mm. Helicoidal flute. Bright, uncoated (blister)
TM-11448520420
3221910899141
4 / 6 / 8 / 10 / 12 / 14 / 16 / 18 / 20mm
High-performance drill bit for the fast and intensive drilling of high-strength steels thanks to its helical fluting and self-centring cut.
Tri-flat shank enables maximum torque transmission and prevents the rotation of the bit in the chuck. Specially adapted for through-holes.