Tivoly, Bohrereinsatz, Step drill Ø6-37 mm. spiral, uncovered.12 steps., in a blister (37 mm)

6 / 9 / 12.5 / 15.2 / 18.6 / 20.4 / 22.5 / 26 / 28.3 / 30.5 / 34 / 37mm High-performance drill bit for the fast and intensive drilling of high-strength steels thanks to its helical fluting and self-centring cut. Tri-flat shank enables maximum torque transmission and prevents the rotation of the bit in the chuck. Specially adapted for through-holes.