Bosch HSS Step Drill Bit 4 - 20mm

HSS Step Drill Bit performs smooth drilling in several diameters with one drill bit.
Pre-punching is not necessary as the split-point tip allows for an easy start.
CNC ground spiral flute enables optimised chip removal and less vibration for even drilling.Highest cutting smoothness due to axial and radial relief grinding.
Ideal for metal pipes and profiles, non-ferrous metals, aluminium, plastics and metal sandwich.
Step diameter (range) mm: 4-20
Step height mm: 4
Shank diameter mm: 8.0
Total length mm: 70.5