Bosch 2608588070 Hss-Altin Step Drill Bits 4 - 20mm, 70,5mm (1 Pack Of 1)

Smooth Drilling in Several Diameters with One Drill Bit
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
1 Pack of 1