HSS Step-Drill Box 3-part

Suitable for sheel metal formingFor drilling of cylindrical holes in material up to 4 mm strength without rattling

• Chamfer zone enables drilling and mutual burring without changing toolsSpiral chip flute guarantees very small effort, clean cut and quick chip flow (little skid marks on varnished sheets)Automatic chamfering and burringNo dimensional check necessary because of readable bore diameters in the chip fluteDue to split point, there is no punch-marking and pre-drilling necessary (even at curves)With trihedral shaft