Set: Yes, Material: Metal, Shank Type: Cylindrical Shank, Drill Type: Step Drill, Hole Diameter: 6-30 mm, 4-20 mm, 4-12 mm
- Center punching is not necessary as the drill tip with cross grind facilitates the start of drilling
- Smooth drilling of holes with various diameters using a single drill
- Axial and radial relief grinding for maximum cutting performance and absolutely smooth results
- Made of HSS steel for high durability
- CNC-milled spiral groove optimally removes chips and allows for low-vibration and thus uniform drilling
- Step diameters: 4 mm - 12 mm / 4 mm - 20 mm / 6 mm - 30 mm