New Genuine Bosch 2608597521 HSS Step Drill Bit, 3-flat Shank For rotary drills/drivers

Step diameter (range) mm: 6-39

Step height mm: 4

Shank diameter mm: 10.0

Choose a pack size: 1 Pcs

For rotary drills/drivers

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
3-flats shank for rotary drills.

Smooth Drilling in Several Diameters with One Drill Bit

HSS Step Drill Bit performs smooth drilling in several diameters with one drill bit

CNC ground spiral flute enables optimised chip removal and less vibration for even drilling
Highest cutting smoothness due to axial and radial relief grinding
Made of HSS for a long lifetime. Laser-markings for hole diameters.
Made of HSS for a long lifetime. Laser-markings for hole diameters. 3-flat shank for high-torque transmission, no slipping

The step drill bit is made of HSS (high-speed steel) and offers a long lifetime when using coolant. Easily visible and durable markings of the hole diameter are provided by laser-marked figures in both spiral flutes. In addition, the 3-flat shank prevents slipping in the chuck and also provides powerful high-torque transmission.