Bosch step drill HSS 4-20 mm, with 3-level shank

Designed for processing almost all thin materials, e.g. non-ferrous metals, sheet steel, plastic or stainless steel
Without pre-drilling, burr-free in thin sheet metal
for removing burrs, making round holes, drilling multiple diameters with one drill, expanding existing holes
Spiral flute extends life, less vibration and higher drilling performance
Diameter marking in both spirals
3-level shank to prevent slipping in the chuck

Model: HSS
Step diameter: 4-20 mm
Step height: 4 mm
Step diameter: 8.0 mm
Total length: 70.5
Step diameters: 4.0 / 6.0 / 8.0 / 10.0 / 12.0 / 14.0 / 16.0 / 18.0 / 20.0 mm